Great work going on here. I love the paintings you've selected. You implement the textures very well. Some are better than others, but I have a feeling that it mainly comes down to time spent + complexity of each piece. #17 is nicely rendered, though that boulder at the tree line is pretty dark and the 2 large trees extend to far on the ground plane. . . pretty nit-picky, I know, but it's a bit distracting for me.
Keep up the quality work- you are almost at 20! I look forward to seeing your work in the other assignments.