Wonderful puzzle game!
I liked the level design and the fact that you actually had star goals for the levels. I didn't quite 3 star every level but it was fun to optimize some of them. The last one was quite tough! The controls make sense upside down/side ways but it sure was confusing sometimes.
It was annoying that there doesn't seem to be a reset button, it's mostly a problem trying to optimize the line uses.
If you expand on the idea it could be interesting to have an area where you can't draw, combined with mandatory scribble limit. (I'm sure you have a bunch more ideas but this was already really far developed for a jam game)
It's really creative to have the same line move different objects in different directions, I feel like that could be developed much further with proper dev time!
Music doesn't loop btw, small thing but it felt really empty after it just stopped after a while.
Totally unrelated but the character reminds me of the Mimigas in "Cave Story"