Do you have advice how I could get someone to do a (possibly paid) review of PCBs for small hobby projects?

Being new to this space, it's hard to learn quickly when the feedback cycle involves having PCBs manufactured, shipped, soldering them and then finding out what could have been better. (Or it works and you never find out what you did wasn't the right way to do it)

> someone to do a (possibly paid) review of PCBs for small hobby projects?

This is one of those awkward things where if you post to r/diyelectronics you might get someone doing it for free, but as soon as you try to pay for it both parties realize the going rate for experienced EEs is somewhere around $100/hour.

You can post to the PrintedCircuitBoard subreddit to (potentially) get a review:

https://old.reddit.com/r/PrintedCircuitBoard/comments/zj6ac8...

One of the Hackaday writers does a PCB review series. It's probably worth reading through to learn from past mistakes.