If you're going to do the river rock thing, I would recommend grouping them closer together (instead of all spread out randomly) and adding two or three smaller sized sets of rocks (like one bag of small rocks, one bag of very small rocks). You can get a bag of "river rocks" and a bag of "pea gravel" for under $10 at a hardware store. I get mine at lowes, but most places have them.
If you go down to a river, you'll notice rocks tend to settle like that. Just makes it look more natural.
I know you're going to add more wood, so that's my only suggestion for now.
If you go down to a river, you'll notice rocks tend to settle like that. Just makes it look more natural.
I know you're going to add more wood, so that's my only suggestion for now.