I sent my knight piece into Mudbox to add some finer details to it.
I added ridges to the horses hair, an indent for its eye, some ridges on its nose to make it look meaner, and added a bit of a jaw. Before doing this I smoothed it in Mudbox by 3 layers raising its geometry to around 9000 polygons. I am happy with the end result but now it looks much better than my other pieces and I may go back and fix a few of them. I found it easy to add detail in Mudbox.