Acrylic Pour 

You need a empty cup 

add a small layer of base (black or white)

add a small layer of a color (feel free to make your own colors)

then add a small amount of base color. 

repeat the steps until the colors and base are layer in the cup

pick a spot on the canvas and turn cup upside down and let site for 1 min then pick up the cup and tip the canvas back and forth allowing the paint to flow over all areas  

let dry for 24-48 hours