I used two brushes throughout the painting.
The first brush was used for the characters, and the second one used only on the background.
Both brushes I found online.

I had "other dynamics" on and both "opacity" and "flow" jitter was on 'pen pressure'.



 
 
Details; this piece was done on Photoshop CS with a Wacom tablet. Everything you see below is on same layer, so no multiple layers (except the lightsaber and final coloring). This was done looking at a printed version that is in Jon Foster's artbook "Progressions". Done for digital painting class homework.
 
I've taken screenshots while painting, so here are the screenshots to give you an idea how I worked on this piece.
         
 
     
 
         
         
         
         
 
  Here, realizing the original is more yellow, I changed the colorization with the "Hue/Saturation" tool.
 
 
Adding new layers and setting them to "overlay", I added colors to the characters.
 
 
 
Finished~