The site loads pretty slowly. You should make thumbnail images of the stuff on the front page instead of simply mashing the big pictures to fit; the user has to load each of the full-sized pictures even though they only see a tiny image, and this slows down loading considerably. I'd also look at optimizing some of your other images a bit more - for example, the bottom half of the robot weighs in at a hefty 39k (or a 10 second wait for dialup users).
You should have real page names, instead of page##########.html. This looks cleaner for the user, for bookmarks, and for search engines.
Ditch the site counter; not professional.
The light gray on dark gray text/background is a bit hard to read; I suggest increasing the contrast some.
Back to the slow loading times, the subpages are even worse (about twice as bad). http://www.head-deviant.com/page_1159195973359.html, for example, has literally over a megabyte of data to transfer before the page is done loading; we're talking a solid 4 to 5 minutes for a person on dialup, and they'll be long gone before it's done.
You've also got a bad mage link that's referencing a file on your hard drive instead of the server (http://www.head-deviant.com/file:///C:/DOCUME%7E1/PATRICK/LOCALS%7E1/TEMP/moz-screenshot-1.jpg)
Asking people to read a bunch of stuff before being able to view the shop when they click the "shop" button is a definite turn-off. That link should probably link directly to products instead, and those notes can be explained in the FAQ or on the individual product pages.
That's all I've got for now, hopefully you find it useful =)
