The HUD is cute and intuitive. 

basic description:

Circle 1 - Is Main Menu with options for skin, alpha, eyes, hairbases and tattos

Circle 2 - Each skin tone offers 6 different options: Basic, Dimples, Peach Lips, Light Freckles, Heavy Freckles and Dark Freckles you can choose one here and skin is also available for toddleedoo body just click in the center button. If you want to use your own skin you can buy the kit for design cost L$ 5,000 or a kit for own use cost L$2,000. Unfortunately there is another skin for this head and no design selling but I think it will change very soon :3

Circle 3 - Have 13 eye colors to choose. The eyes of the head are rigged for it and are sold more specific eyes to this head in the store. But you can use your own eyes or mesh eyes only activating the alpha in the HUD to hide the eyes of the head (mesh eyes may need some tweaking to fit)

Circle 4 - There are 16 hairbase options available and you can remove this clicking in "remove" button.

Circle 5 - There are 7 tattoo layer options. You may wear one tattoo layer on your face at a time and of course there are more tattos kits available in store.

Circle 6 - Here are the alphas, you may alpha out your head, eyes teeth (this option only available for the "teeth version" of the head because are the only one that has teeth bared) and ears.