Another Paper app post. I'm struggling with whether or not I feel like I want to keep using this app or not. It's fun. But the brushes don't play nicely together. Markers don't color over top of brushes very well, for example. Colored pencil and pen seem to be the only tools that can go over the top of other tools. It's a fun challenge, but is it a challenge that I want to take or is it a challenge that I'm forced to undergo because of the limits of the program?