Good game all around, might want to tweak a bit.
Pretty good game, I like the art style (simple, colorful versus dreary,) the platforming is fairly well-implemented and the puzzles are fun, if on the easy side. A couple things I'd suggest, however:
1) Remove lives entirely and just let the player continue from checkpoints. 20 is an absurdly high number of lives to begin with, and puzzle games such as this generally don't force characters to restart. It's not a big deal, but I don't see the point of it.
2) Some areas have false leads that cause uneeded deaths. The opening platform sequence has platforms you fall through even though they appear solid. It took me a bit to figure out red flowers=bad, and then I didn't encounter the mechanic again. And then at the lava pool where you have to click on the rocks, there is a tiny stone I thought was a ledge judging from previous sections, and it wasn't.
3) The second bridge has a clue on it, but after arbitrarily jumping I made past most of it before I noticed the clue. This is fine and all, but the game saves which parts fell even though I hit the checkpoint BEFORE I died. Reset puzzles after death to ensure players must complete them as intended. This can tie in with point 1 also: don't let me run out of lives, but make sure I have to solve things correctly.
All in all, a solid game, keep up the good work.