I added specular lighting (phong) today! w00t! looks awesome according to me! but... veeeery different from my reference picture. Probably because that's the "first step" pic.
Here's the reference pic
EDIT: godamnit. the images have the colors switched as well as flipped around y-axis... Now I don't know if I'm calculating wrong, or if it's a texture indexing problem. I quick fixed it by indexing from right to left in the texture and manually swapped the colors.