lesson one was really basic, which is exactly what I need.
here is my completed assignment. I know that I did this one too dark, and there isn't enough contrast. I could have played with the level adjustments, but I felt like that was cheating?
anyway, the bottom right image is the image before placing textures. I have a lot to learn, haha.
edit: I decided to tweak the lighting anyway, and I think it looks a lot better.