Realtime image generator, within virtuemart/joomla

Before responding or biding on this job please have a look a what it is I am trying to create. I require a preview/image generator which will allow my users to create an image online. If you look at the site you will see the objective. [login to view URL] I need the image generator to allow the user to choose a background from a choice of backgrounds, a foreground from a choice of foregrounds and a place to input text over the foreground. The create image must then be able to be purchased through virtuemart. The closest thing i can find to what i need creating is this example [login to view URL] I want it to work the best way the developer knows how, if you can get it work with virtuemart/joomla then great if you think another way would be better for me I am open to suggestions. Ideally i would like to work with someone that has done this type of thing before and can show examples. I need it done quickly and proffesionally and need to beable to manage the background and foreground images. The image attached is how the finished proof will need to look and it has the features that are able to be changed.