In terms of composition, there are several things I look at: 1. Is the figure free standing on a blank background or is there a definite sense of environment? 2. Does the figure have a blank face or is there some expressiveness? 3. Are the lighting and color schemes interesting and do they provide a sense of mood? 4. Is there a sense of depth and perspective to the way the figures are arranged in the scene or does the scene look flat? I think all a lot of other considerations such as positioning of the figure come into play when you answer these 4 questions first.