It could have looked better to be honest, but i really liked playing it. I like that you can stick to most walls and have to unlock certain parts. And what a big world!
Viewing post in Slightly Unconventional Platformer jam comments
I think the colours are all a bit bright, there could be more contrast. You could make the background more towards grey so other things stand out more. You could make a cohesive colour palette and apply it to your game. I would suggest watching a few youtube video's about colour theory, those can probably explain it better than I can :)