It takes awhile to start getting listed on teh big TGP's. Maybe there is nothing wrong with the design of your gallery -- you just have not waited long enough to see the true results!
If you have Asian galleries and want to see a shitload of targeted traffic, then send your galleries to
www.uh-oh.com and
www.asianthumbs.org. A good listing on both of them can get you 40,000 hits easily.
-eru