As somebody else said before me: it's a little short on images = most tgp sites require at least 12, 15 seems to be the norm.
It's also a very old-fashioned gallery (not that that is necessarily bad... some people say they're converting better) and it could be that several tgps wouldn't list it for this reason (and that too many cheater galleries are done in a similar fashion).
I would also recommend that you make the background a little darker, which would match the sponsor tour better, gets the banners to stand out more, and would be more gentle on the eyes.
To give you an idea: I spent today about 4 hours on just
one template (1 hour of it to find the font from the tour - grrr) and I'm still not happy with it...
edit: btw my sales for the entire month are
shocking! But I can also tell there's some heavy shaving going on (this from me who in the past has said that these statements are probably exaggerated...)