Rough sketching. I'd say it's pretty self explanatory. I drew different layers with different colors. It's the only way my brain can keep all this straight. Brown = base/body, black = clothing, blue = lightsaber. Most of the time I sketch with a pencil in photoshop but this one is done with a hard round brush. She's up against a dark background so I figured the bold lines would make her stand out better once all was done.
Clean up the picture. Normally I use the pen tool to map out the curves. I... lazed out. The pen tool is an enormous pain in the arse even with a tablet. The only advantage is smoother lines. For this picture, I just traced over the sketch layer with a hard round brush. The lightsaber itself is not drawn in, but I'll get to that later. I also did a little fixing on the fingers, nose, and fine details.
Lay down flat colors. Not too hard. I mainly use this as a reference to what color combinations I want to move forward with, although some artists will use the flats as a base to start off. I put each color in a different layer to make it easier to fix or replace colors I don't like. Merge them when finished but don't include the outline.All layers should be set to Multiply.