Wow, looks really nice! I used to be of the mind that the more busy a site was with animation and flash and confetti canons, the better it was. Now that I have matured, I like clean and simple sites; it's better for the aging eyes. I agree with the previous poster, you should have posted a link and not a picture. I almost didn't even bother because it seemed like too much effort to type your address in.
Yes, a very attractive site. I notice you are number 1 on google for the keyword "follower t shirts" but as competition increases I would suggest you put more text on your home page, 400 - 500 words, keyword optimized. You have a link a the foot of the page for Affiliates which merely says the program is coming. Why not set up a capture form for email addresses for anyone who would like to join your program so you can email them when it's ready? That way you don't lose out on the traffic.
I would recommend you to get a nice templates. Under the "Style" category, you may omit the "T-Shirt" word. Everyone knows your site is about t-shirt.
You have nice collection of the tshirt designs, layout of your site is good, you have used very good colors and navigation is good too
At first I can't understand why did you add the picture instead of the URL? The design of the website is usual and similar to another in the same niche. But the design of your T-Shirt is very funny!