uhm its ok..if this is 1 of your first large arts, then its pretty good...but as said, try to stay away from renders, they are too unoriginal...large arts are where your originality SHOULD be key, keep that in mind!!, also as said the lighting is off, check that out, and maybe fix it to experiment..i like the flow on this, and there is a clear focal which is nice, but its not very original, but keep goin mayne, be more original!!!