My way of drawing clean anime. ^^
start with a reference picture (if you do use ref. pics, anyway).
Crop the picture so it will be proportional with the RMD drawing box. Add guidelines (I found that this helps a lot with placement).
You can do this step on Paint or another picture-editing program.
Get the colors from your reference picture ( I use the eyedropper tool on Paint).
Always start with you background first. Disregard the areas where the character will obscure the background.
Shades of blue done with spraypaint.
Clouds done with line tool.
Shadows in clouds done with fill tool at 12.
Try to use the undo button to get rid of your mistakes, instead of covering them up. It saves a lot of ink.
Color first. Draw what will be covered, like a 1st layer.
Draw the face and the shadows the hair makes.
Draw the hair.
Add whatever else is in the picture. In this case, his guns, hands, and rings.
And you're done!
Hope this helped! :D