That’s a good color, I like it. I can’t see the details, because the pic doesn’t enlarge, and that’s perhaps a good thing. It would take about 20 minutes to download a picture as big as that one says it is on my dialup connection, but fortunately, all I get is the thumbnail.
Don’t sweat the picture posting, it will come to you, already you are getting better.
On the dirt, I like how the sanded areas get lighter in color. In the real world, high ground tends to dry sooner and get lighter, just like yours.
For texture, try using a wire brush for dried material, or a paintbrush while it’s wet, and always work the fall lines. In the real world, gravity works downward, not side to side. A lot depends on how the area will be treated. If you sprinkle sand, dirt, grass or other foliage on the dirt later, then strong brush lines will look pretty good. If the dirt will be a finished surface, medium grit sandpaper may be a better choice.
