Custom Design T-shirt Website

I would like a T-shirt design website to be created exactly the same features as or even much better than the t-shirt design websites I've listed below: [login to view URL] [login to view URL] [login to view URL] [login to view URL] I only want bids from the people who have this solution already implemented. Please send a link so that I can have a play around with the system. Please provide references for privious similar work which you have done for your clients.