This is the buffalo after some glazes of color, some darks and details, and some lights and details (with gouache).
This is the first pass with color and value as well as texture. I wet each area and dropped color in paying attention to values. I added texture with salt. This is the base I will work from. From here I add more values (mostly darks) as well as some detail.
I worked a little more on the tomato (apple, lol). I added more color, some more ark, and some detail. I also toned down the background green a little with a red glaze. It needs a little more work, but is close to complete.