very nice, I love one piece
A few a commends : put the abstracts in overlay, grand ex. and other difrent ways and see what looks better and when. Also put more and in other places than the center but in lower visibility. An other tip is that when you use gradient for the background like now put it to Linear and triangular wave and then start from the place you whant to give some focus till the end of the sig. You will see that this is very nice most of time and much better than the usuall gradient. when you make the first background double it and put the secont in overlay and play with the invisibility to make the colors more alive, also after that make a new background too and put it to color (not 100% visible , depents were it looks nice)
and put the abstracts between the normal background and the one you putted at color mode.
If you follow all these you will make much better sigs
About rate, I dont rate sigs, cause sigs is art and art is unrated (it's allways pefrect for the maker and for the others depents on their taste so as you see we cant rate it.)