I have added buttons for clothes and cock "size" as well buttons for something extra. The shading isn't 100% done yet, more like 65% or so but I thought it would be good to show you so you can tell what you think. Then last I added a kind of pubic hair that is a bit like a fur tuft though that and "extra" is just optional, if you don't like it let me know and I'll get rid of it.
The coding isn't really done either, later you'll be able to change each body part individually.
Instead of that I explain the coding in this post I added description to each code in the document (starts with "//", it's a way for you to add something in the code that the flash doesn't read). To bring up actionscripts simply press "F9" and it will show the codes for selected item (if there is any). I added codes to a frame in the main timeline on the Actions layer, in each of the buttons and inside most of the body parts.