LOL to the comment about your sister. Nice pic, i think u blended her really well with the background and her skin looks like she just gone out of the water. Looks like a peaceful summer pic - says me from sweden where it's cold and raining at the moment.
If u want to have paler/whiter skintextures for Posette, u might want to dheck out this guy's work. The texture u used is based on his skintextures.
http://home.online.no/~kjellil/Index-AllStuff.htm
We also have a pale posetteskin in the freestuff here i think.