I am sort of puzzled by the dude in the center. Where are his shoes? At a first glance it looks like he has skeletal knees sticking out of his shorts, because of the skeleton standing right in front of (or well, behind, if you look from the character's perspective) of him. His shield also looks way too small to be of any use (and it should not be at the elbow, but Strato already pointed that out). It also has quite a lot of arrows sticking in it while there are no bows to be seen, but that might of course have some other explanation. It might've been a good idea to add a dead archer skeleton though.

The perspective of the floor in the final version is also quite wrong. The lines on the floor seem to go in semi-random directions instead of towards one central point, which makes the floor look odd and extremely steep, in turn making the skeletons in the back look way bigger than they are supposed to be. You might want to read a bit on perspective (I bet there are plenty of tutorials to be found on google) because perspective (or lack thereof, rather) done wrong can make a drawing look a lot worse.

As a last point, the necklace/amulet of the Dude in the Middle is very different in drawing style from the rest, making it stand out and appear quite ugly. It almost looks like you added it later with paint or something, which is a valid technique but requires some skill to pull off correctly. As for now, I'd stay with handdrawn-only or digital-only, and leave hybrids for later :P