1 looks really really flat. The effects overlapping him in the wrong places kind of kill any possible depth. focal is really weak, too much going on around him. Need to fix up lighting, his face is shadowed, but theres light everywhere. Also colouring, the tone of everything around him doesnt match up with the tone of the render itself.
2.. is your render b/w? You always seem to mix a b/w focal with a coloured everything else.

Again, work on colouring, depth, lighting. Focal isn't strong enough as well.
kiu