all your sigs have very nice effects and overall visual appearance. However, one thing that I think could be improved on is coloration. Most of your sigs have so many different colors it almost ruins the flow of the sig. A color balance layer and a few gmaps on all of your sigs would make them really come alive IMO.
#2 and #5 are my favorites however, #2 could do without the top left c4d, think it ruins the flow #5 could be smaller or again, get rid of the top left, my eyes want to focus on your focal but then they are diverted there overall, I think you have some great techniques
