1) Need to tone down that purple gradient map, makes it look cheap.
2) Text isn't necessary and in this case, destroys a decent sig.
3) I like how you maintain the focal.
4) Weird blue line on the bottom right.
5) Bit more depth and you should be good.
Over sharpened in alot of places, try to keep it looking smooth but not too smooth. Stop using that kind of text it won't fit in any sig..Too big and ugly. What you should do is remove the gradient making it so purple, or make it more subtle, and get rid of the border and text...that'd be much nicer.