So yeah, here's my (constructive) critism:
1st one: if you would not have made that with brushes entirely, it'd been good.
2nd one: it's basicly awesome, apart from the fact that I made allmost everything LOL
3rd one: basicly okay, only... I dont know, it misses something.
4th one: the effect is cool at first, but you changed something (not sure why), that makes it look worse actually.
5th one: that's just a brush with a bevel, a radial gradient, a inversed lens flare in the background, and the brush duplicated and motion-blurred. I can do that in 5 minutes, it's nothing special. Be prepared to spend hours and hours on a 'peice of art'.