Thanks a lot for the feedback!
Adding filters is a cool idea, will have to explore it.
Ground rule is only black lines can be captured. But i will break the tutorial more so that this is clear
Eraser is also something i didnt think of.
Rotation i have purposefully left out, i will include lines of different orientations if they become absolutely necessary to clear the level
I added the camera button so that player can get a clean look at the level and also so that the camera does not follow when trying to click UI buttons. But it seems like unless a line is clicked there is no way to dismiss the camera. So will need to fix that!