Stunning graphics! I especially like the character art and backgrounds. Like others, there were some confusing parts where the 3d aspect of the terrain implied solid ground but didn't actually collide with the player. I'm personally not one for puzzle games (because I'm bad at them), but I really enjoyed the main element/platform drawing mechanic and overall progression of the game!
Aha yes! I too also fell through some ground thinking I'd land on something haha!! Definitely something we will be updating post-jam so it won't be so much of a 'WhoaOOaa I'm falling?!' reaction 
Ironically, I'm very bad at puzzle games too LOL (also because I'm bad at them HAHA)!! But I'm so honored that you gave us a shot and you enjoyed the drawing mechanic! c: Thank you for playing!!