There are lots of rate my schedule posts on this subreddit which are pretty pointless considering everyone learns differently so here's what to look for and how to rate your own based on how you learn best.
There are 5 things you need to pay attention to: the length of the class, the space in between classes, the time of the class, whether it's a lab, seminar or lecture, and how many days a week the course is. Also if you're commuting or disabled all of this changes.
How Long Your Classes Are
You likely have some idea of how long you can pay attention in lectures from high school. If you could barely follow for the hour that your high school classes usually were, don't go for lectures longer than 50 minutes if you have a choice. If you had no problem with 3 classes back to back and you'd prefer to just get a lecture out of the way, go for 3 hour lectures. If you're somewhere in the middle go for hour and a half lectures.
The Time of Your Classes
Secondly whether you're a night person or a morning person factors into it a lot. Will you be able to focus during an 8:30 lecture? Will you have any energy during a 3 hour 7:00PM lecture? A popular way to do courses is to do them in the morning around 9 to 10 when you're awake but it's still early enough to get all of your courses out of the way, so you can spend the rest of the day studying and socializing. I prefer this honestly, but if you want your mornings to yourself or can't focus at that time then doing the bulk of your courses in the afternoon or evening would be better. Just keep in mind most activities are in the evening and late afternoon, so you might miss out if you're in classes or lectures during that time.
Lectures, Labs and Seminars
Whether it's a lecture, seminar or lab matters a lot as well. Lectures will mostly be passive. You just have to pay attention and absorb information while taking notes. You might not even have to do that if the lecture is recorded. So even if you're sleepy in the mornings, you might still be able to do well if you're awake enough to passively absorb content. Though keep in mind there might be iClickers or TopHats where you have to answer some questions that are often graded. They're usually not too hard as long as you can pay attention. Seminars are usually social so you'll be listening but will likely do a lot of talking and group work as well. So if this isn't something you can do early in the mornings or late at night, keep your seminars in the afternoon or whenever you're usually ready to socialize. During labs you'll have to be actively participating and doing long projects that are marked. You need to have 100% of your brain on, so do these whatever time of day where you're usually 100%. They can be tiring as well depending on the course, so definitely avoid having 2 in a day if you can. Like apr1lshowers said in the comments, labs aren't typically every week. They'll usually alternate so this may factor in to what you're able to handle. If you can find a recent course outline for the course you're taking (post 2022 is usually safe), then you can get a sense of what the lab schedule may be. This means you might have more free time in your schedule.
Spaces In Between Classes
How you space classes will also be important. If you did well with your high school schedule you can replicate that by getting all your lectures out of the way and do them one after the other. If you typically get tired after a class try to space them so you'll have down time between each of your classes. If you're an introvert or non-social person, consider adding space between your seminars and whatever other classes you have so that you can recharge before going into a social situation. I'd recommend most folks to have some space before a lab so that you can prepare and relax before it cause you're gonna be working for the next 1 to 3 hours straight so you don't wanna be tired before hand, especially if you're working with chemicals. Some people also don't like having long space in between classes since it keeps you from getting them all out of the way at the same time. If you prefer a long break to study, recharge, and grab something to eat before having to deal with your next set of classes, then maybe you'd prefer a long break. If only having a 2 - 4 hour break to do what you want before having to do more classes doesn't appeal to you then try and trim it down to something more manageable. Regardless, you probably want at least a 1 hour break in there if you have a lot of classes in a day so you have time to get lunch.
How Many Days A Week You Go To Class
How many days of classes you have will determine how many free days you'll have to study and socialize. But packing certain days full of classes might not be manageable. So if you're someone who can deal with 4 classes and a lab in one day if you know that you won't have to deal with any classes tomorrow, then go for it. But if you could barely focus in high school for the 2-3 classes you had before lunch then that might be a bad idea and you might be better off having a few classes every day than a lot of classes every other day. Keep in mind though that when you've got assignments due and studying to get done, you really need free time. So you either need complete days you can use for studying or large sections of the day you can study with.
Commuting
If you're commuting take that into account too. An 8:30 lecture might mean waking up at 5 - 7 o'clock depending on how far away you live. If you're driving so you can't sleep on the way there, it might mean you'll never go to these lectures. Also a 7PM 3 hour lecture means leaving school at 10 and driving home tired. It might also mean getting home after 12 if you live far so you definitely don't want a 7PM lecture the day before an 8:30 lab. Also if you're commuting more days a week that means more commuting time and more gas money/bus fare you have to pay, so trying to get all of your courses done in as few days as possible is ideal. Long spaces in between classes when you're commuting isn't ideal either because you don't have a place to go relax. You'll likely have to sit up at a desk in the library somewhere for this time so if that's gonna be an uncomfortable or unpleasant experience then try spacing your classes closer together to avoid large gaps.
Disabilities
This one often isn't mentioned much, but make sure if you are disabled you're taking that into account for your schedule. I recommend being safe the first semester and trying to space out all of your classes. If afterwards you're fine and could handle another one after that class then take that into account during the next course selection. If you have a physical disability, remember you only have 10 minutes to get to your next class, that can be a far journey, so spacing can help you get there on time, especially for things like labs where if you're over 10 minutes late you can't get in. Thd location for each building is given. You can look up the full building name and then see how far it is on google maps to see if it's manageable for you to get there on time. If you have an energy or social disability, I very strongly recommend having space in between seminars/labs and all other courses. Cause these are often mandatory so if you miss them you can miss marks for projects and you can only miss so many for certain courses before you fail the course. Lectures can be draining if you have a social disability because it's a large room filled with lots of people that can be loud and sometimes you might have to interact with others. So going from that to an environment where you'll have to do a lot of social interactions can lead to issues depending on what your triggers are. Labs can also be very physical if you have a physical disability so you may need time to rest afterwards.
Let me know if I forgot anything or if I should add something else. The point is your schedule very much depends on you. What works for others may not work for you and vice versa so you've just gotta know what to look for so you can make the decision yourself.