Wow! That is some serious editing! I don't think I could do that! In my opinion, if these are for an animation, I would suggest that you use less editing. I think that animations would look to overdone if you use to much. I would keep it simple. But again, this is only my opinion.
These are pretty good...
I don't really like the first one.
The second one is great.
The third one is also very good. However, the 'glow' of the laser effect sorta messes with the picture itself.
The last one is okay, but it just looks like a minifig with half of it painted like a skeleton.