Custom Application - Like T-Shirt

Hello, I need a custom web application built along the lines of a custom t-shirt shop, such as [login to view URL], [login to view URL], etc. This will be for a custom made purse, for the product line of Miche Bag ([login to view URL]). I need *only* the application that will be integrated into the existing ecommerce/design of the site. This application will need to allow users to add text/images to an overlay of their "shell" and then perform functions such as crop, scale, etc. on the image. Once they choose an image it will need to be sent to the cart and have the custom image generated in a Photoshop compatible format. Only completed orders will send on this image. I'd like someone who has done this type of project before. If you have POST A LINK or send me a message with an example.