I am a fan of the 'control the level, not the character' concept, but this felt somewhat unresponsive. There were several times I would try to right click a platform to remove it, and i wouldn't work. I also feel like more could have been done with the level layouts. They mostly seemed to be just a flat ground with a flag somewhere in the air, and a pre-set timing for the character's jumps. Consider adding more varied terrain like a wall that the character has to get over, or a pit they could fall in. Also consider, rather than pre-timed jumps, the jump could be triggered by a level feature that you place just like you do a platform.
Edit: The character is also very cute