Here's my review after you guys' comments. It's surprise to me how human skin has so many colors in one person. As I'm writing this review I'm staring at my green bold line which is the blood vessel at the back of my hand. OK, let's talk about the drawing. ........ I want to draw this drawing because I like how the light of the skin bounce to each others and it create different effect as the skin has the different color tone in different area. ( I hope you understand my english. ) Such as at the bottom left of the drawing, the hand reflect the light to the leg. (But the quality of this drawing is another story. ) What I don't satisfy are many things such as...... 1. I don't do well at the edge between the light and the dark on the left leg. It was a thin area before I can changed the color. This sort of light is so hard to draw, the rapid change of the light. 2. The shade of the left knee is too yellow. It should have been more red on that area. 3. I should have put some light at the black background to create some air, but I was too lazy to think about the background. ......OK.... I'm too lazy to write it now. Thanks for your comments, guys.