It took me a while to understand that I could click on the sprites on the bottom of the screen to be able to place objects, then everything went fluently, with nice puzzles and good musical vibes <3
Maybe it could help to put some empasis on the bottom icon:
- Make a bump back & forth anim on it a the start of the game while you don't have taken one.
- A tiny animation when you hover one (like the white stroke bumps in rythm...