jusst a word about paint sticks....PLAN ahead when you think you are going to do them. I really should make a tute...anyway...the reason I say that is , once you peel the skin of the stick, be ready to do several rubbings, so that you are only using one color (or maybe two) at a time. the longer the stick is unpeeled, the quicker it starts to dry again making a NEW skin! make/cover a large work surface, I love foam core board for this and blue painters tape! THe quicker and lighter you work, the better the results. Remember less is best you can always add another color or deeper layers of the same, later after the first layer has dried a bit.
I just love playing with paint sticks!