I've had a look in Photoshop because I thought that the legs were too short. This isn't the case however, as there are garments and satchels covering the groin and uppers legs, and the waist is perfectly shown using the belt. After analysing more, I noticed that it was in fact the arms that were too long. Bringing these up will almost instantly make the legs look longer. I also noticed that the neck is to long by about 2-3 pixels.
I hope that helps. I have an edit saved on my hardrive, if you'd like to see it, let me know. Love the colour choices btw.
I think the bottom of the shadow is too rounded - could be flattened and spread out a few pixels.
His right (our left) foot should more facing toward where hes looking. The way his foot is facing would be a bit awkward for someone standing still, because their center of gravity would be more toward the direction hes looking. Hes more likely to loose his balance, especially since his feet are father out then shoulder length. Try standing like him irl, you'll see what I mean :)
Thank you for the compliments and criticizism, I'll try editing the arms a bit. :)