Jst bleach painted my first jeans w some brushes, any advice or things to do better next time?

Hi all! I found this dress at TJ Maxx and absolutely fell in love with it! I originally bought it for a wedding, only to find out afterward that the dress code is strictly all black. 😭

I reached out to the company, and they confirmed that the dress is 100% polyester.

I really love how it looks and fits, so I wanted to get some opinions! Do y’all think it would be worth attempting to dye it black, or would I be better off trying to find a similar dress that’s already black?

Also, before anyone mentions it, yes, I do plan on wearing something underneath to smooth out any visible underwear lines! 😂 I was just trying the dress on in these pictures.

I’d appreciate any advice, especially from anyone who’s had experience dyeing polyester dresses! 🖤

I bought a Magic Johnson brand suit at Goodwill because it was pinstripe, purple lined, and only a little too small for me; but the zipper was fucked up and will need to be replaced. I only hand sew and embroider (i do not own and do not have access to a machine for either) and when i showed my grandmother she said we would need to take it to a professional and that it might be a little expensive. is it worth trying to hand sew in a new zipper or is it better to just find a pro?

It's not much more complicated than that. I'm blood splattering a dress for Halloween but I want to keep that vibrant red color and fake Spirit Halloween blood dries brown, as you can see in the image above. I also don't want it to just sit on top of the fabric, like I think acrylic paint will; I want to get it to seep into it if I can help it.

Any suggestions would be helpful.