As part of the mock art test, I created a variant of the crab rock in the Borderlands art style! I drew all the ink lines in Photoshop but when I imported them into UE4, they weren't giving a crispy black outline like I wanted. Once I finished the outlines on the diffuse, I copied them into the AO map which gave me better black outlines!

Total Tris: 21,456
Two 2048 texture maps