Ok, so your game is actually pretty well structured, and I like having to be strategic with the skills you use since you only get 1 use.
I think it's got potential to be a really charming game, but there's some issues you would have to go through :>
First - The coins. Doesn't really feel rewarding collecting them and it would benefit from a shop where you can maybe buy upgrades or costumes for the lil guy!
Second - Change the scenery a little bit every once in a while. It's a small thing but seeing the same walls and ground all the time could get repetitive.
Third - The game could use some BGM, music is optional but VERY effective so if you slap a banger in people will like your game way more!
And of course - this is more personal but I would go for a more fun-based approach for level design. Challenge is really good for the game, but my peanut little brain got stuck in a stage and couldn't finish the game (sorry :<)
Anyways, your game has a lot of potential and you would be putting it at a pretty generous price range, so I wish the best of luck to you :D