A very fun puzzle game concept.
I like the idea of having to find a solution for multiple puzzles a once!
I would have liked less iterations per levels though, because it's frustrating to have to replay 5 previous levels just to adjust you drawing slightly.
I think the game would have benefited from having a level preview, where you could check out the 6 layouts in advance, it would avoid having to restart the level multiple times just to see what the obstacle is.
In any case, congrats!