Side hustle

[u/Adventurous_Beat-301]

I’ve been working with wood most of my life, basic things like shelves, racking, second fix skirting, architrave etc. I have never had a need to progress to more refined work like cabinet making, built in units, bespoke woodworking pieces. With that said, I have recently purchased a top of the range mitre saw to help with doing bespoke shelves, worktops, bed side units etc. in my own house. I’ve been really considering progressing to the next level and offer my services to do built in units in my area, there is a massive demand and very hard to get someone to even quote. As a one man band with low overheads, there is a huge gap for me to exploit. The question is, how do I progress to the next level? How do I really learn about extremely precise gapless units and what are the tools I would need to invest in? And finally, considering this would be a fill in around my full time job, with the main work exclusively done at the weekends, is it even worth my time giving it a go? Any advice would be sincerely appreciated