Using the techniques that Tyler laid out in his tutortials, I have sculpted and started polypainting a rock asset that I can use throughout the scene.

One thing I wanted to keep in mind is that I wanted this rock to be interesting from multiple angles - using Zbrush's deformation tools were absolutely essential in creating a more interesting silhouette for my rock. I also found that alternating between the Trim Smooth Border tool + the Orb Flatten Edge Protect brush gave me the best results for my surfaces.