You're definitely improving, I'll say that right away. They are bigger and clearer then your previous stuff, and I can see your shading is getting more advanced. Also, not everything is totally saturated, yay!
The first point I'd say you should work on is getting rid of the black lines. They can be used well, I know, but they are really only detracting from your work. Especially the black lines on the inside areas, like the face. Especially the face. The mouth on the guy with the red goatee is pretty nice, if you use a dark skin color or something, instead of the black line, it could work. His eyes look like buttons though, not working at all.
As for the run... not sure what's going on there. Is it WIP? If so I'd try and animate a skeleton first, just lines. This is to get the movement looking right, then draw the forms on top of the lines. Don't reuse the torso and arms for the run, it will not look right.