a few issues
first of... egnore all the 40k fantatics... i may be one to... but i spend more time painting then playing... anway... first main issue i have with it is... well... how long is someones chest?... you can see the belt... however his trousers finish before the *skirt* bit... just make the legs go up under the *skirt* so it doesnt look as strange... also perspective... your trying to do two different perspectives in one picture... some people can pull this off... but there isnt really enough image to play with seen as the background is mono toned... so i would sugest making his right leg longer and a bit closer to counter that... also sort his right foot out... looks like a lump of metal... then move his hips over to the right side of the page a bit more... its a nice sketchy picture but has a lot of flaws in it... nice work but not the best iv seen you do... Ciao