First painting

First I primed my canvas again with a thin layer of gesso, then I sketched out my composition using burnt sienna using basic shapes.
Next I sketched in the actual shapes, checking composition and proportion.
Then I blocked the shapes in local color. Color mixing is still quite challenging for me at this point. My palette is very disorganized and muddy.
Next I fixed the local color a bit more.
My teacher's drawing is much neater with cleaner colors at this point. Hopefully I can still come to a good finishing point though. (:
The third pic is hers.