Very nice, works well as a whole piece. And the dimensions/perspective thing I dont think you need to worry about, the fact that it might look confusing to people is positive, who is to say what it should and shouldn't be? How long did this take you may I ask? It obviously wasn't a quick sketch!
haha nps, it can be confusing looking at the picture as a whole but as parts its interesting, it has elements of a portrait, character, landscape, and abstract picture. the composition is my most favorite with everything being so consistent