What is the black and white sillhoute on the layers nearby? Also are you using any special blending modes of not for paint...

Those are our characters from our iOS game "Eat Sheep" and I did not use any special blending modes, just used an eraser to add the cuts and outlines from the base.

Thanks for the reply. By the way what brush are you using?

I am using the chalk brush! You can download it for free if you want HERE: https://cgcookie.com/resource/2d-digital-brushes/