Really good game! Enjoyed the puzzles a lot and the artwork is really nice. Made it until lvl 7 before getting stumped. But looking at the screenshot now I think I got it, so might go back and try again :D
Thank you for playing!! You are not required to solve every puzzles to unlock next stage, and it's totally fine to skip some puzzles!
I hope you could check other puzzles too when you revisit, as I think they are very cool hehe