Sister Portrait

I know it's boring, but it was great practice.
I used a personal reference of my little sister. She always slouches, but she's so beautiful and a pleasure to paint. This drawing doesn't do her justice.
My style keeps changing; hopefully I'll settle on one soon. This is my first submission using a tablet, and I can't believe how much it speeds things up.

Photoshop CS3, Wacom, and a lot more time than it looks.