I've had the question "what does it take to model nude?" and the answer is very simple: have a body, sans clothing.  Do you need to be a certain age/size/gender/etc?  Absolutely not!  You are perfect the way you are.  There are so many negative messages towards the human body, and I am not interested in any of them.  It's so inspiring to help people face their body fears and see the results both in the images, and in their demeanor.