OK, so I was playing around at work today (its a slow day) with the base map from this months challenge and this is what I ended up with so far. I didn't have any real goal in mind, just playing around with textures and layer effects, etc.
The foamy water could be better but I think the lichen/moss covered rocks look pretty good.
The bridge was added as an after thought, not sure if I'll keep it, dump it, or add more.