That is badass dude. You cant make your model from scratch if you have your own blueprint to work from?
I use a program called Poser. It comes with some basic models, and there are a lot of sites where you can download more (some for free, some not for free). And its basically the 3d model(s) itself. You can actually make your own too, but I lack the skills to do so.
Basically the body that I use is called Victoria 4.2, the textures (skin tones) are one that someone else made, although the tones are fairly easy to do yourself. The Lekkus someone else made, its a 3 year long project that a designer has been working on when he can, and its turned out great (and free).
Its actually not too difficult to do once you have all of the models and get used to the programs.
If you are interested in learning most just toss me a PM. Poser is about $400 bucks, but there is a program called Daz3D that is pretty much the same, and its completely free, although the UI is a lot different and I'm still learning it (about to move to DAZ once I learn it well enough).