You could do a bit more with it. It's just one page with a bunch of tumbnails that lead to other sites. The tumbnails are far to small to get a feel for the themes and you've so many packed into that page it looks confusing.
For a theme site, you could have probably used a better theme...kind of bland. I like the layout overall, but I'd have some cool widgets or videos embeded into the page. It needs some kind of action on it. Keep developing!
Your background is solid brown, it looks nice it is a groovy contrast, but this solid brown is not an inviting color. Cool website by the way.
I like this site, it looks very nice but I don't know their purpose, what it is actually for. You should put some description, contents, and categorized them. For example, if I click on one thumbnails, it will directed to another pages full of thumbnails also, before it reach the destination, so you can add more and more thumbnails, is it..