The style overall is nice I think. It's not very custom though, having only a few subtle changes from the default vB 3.x skin. You also say, "I created the graphics..." but there aren't veryy many custom images = default forum index icons, default buttons, in fact all images look default. So not much change from the default skin at all really, except for the logo, which IMO has no specific brandable identity.
Additionally - I'd advise you to upgrade to the most secure vB 3.x version ==> 3.8.7 PL2
Whatever the case may be = Good luck with the site.
J.