Welcome to Gaia! ::

I really really really like the first one! The textures and selective coloring amuse me.

I can't help but say this ~ your friend's eyebrows are SO black!!! I find it distracting and I wonder did she dye her hair? Is it a wig? Gah!
Sorry about the rant there. I like her expression in the 2nd shot anyway.
In the 3rd there's a funky bit of branch that looks like it's sticking out of her head and the green reflection on her glasses they both detract plus she looks really stiff razz
I think the pose on the last is cute if a little cheesy ~ a silly grin would have helped here and maybe her fingertips too
*goes back and stares at #1 again* cool