Human ninja forms

OK, so I decided to press on with the human forms, because they were new and rewarding to draw. These are martial art type characters with bulky clothing and belts, which makes things a bit more forgiving on the artist to be honest.

There are some perspective problems with the size of the arms and legs. The book I am using suggests drawing triangles and other geometric lines you can measure to get a good idea of relative size. Otherwise, I don't think the figures are that bad, better than what I usually draw anyways.