Okay new rule: I will stop with the promises for regular updates. I will update when I can with what I can, but they may or may not be regular. I have been busy, lazy, on vacation (so didn't draw for a full week), busy, lazy, and lazy and now am apparently the new moderator and leader for Illustration of the Week (which will begin within the next two weeks).
I appreciate all the comments and will respond to them next time. For now, have a longer photostudy I did. I know it is full of problems (pose isn't hunched over enough, feet at the wrong angle, butt too big, sun peeking through trees too much, head and hair all wrong size/shape etc etc etc), but I was focusing on getting as realistic as I could in terms of lighting, colour, and rendering. I've included the original photo as a side-by-side as well so you can compare. I think I achieved about as good a finish as my skills currently allow...although I don't yet have a very efficient painting process (DAMN YOU HAIR). Painted with basic round brush, starting with a hard edge and then finishing with a soft edge, then a couple textured brushes painted very lightly on top to prevent it being too plastic looking.