If you have never modeled before, perhaps start with something smaller, like a prop of some kind and work your way up. I think the first thing to learn is the program and the basic principals of modeling before trying something so complex.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi