I've decided to upload the PSD and a short 5 step jpeg tutorial on some of the process behind creating this painting! I've also cleanly layered, named, and grouped the PSD you can peruse it at will! There's so many ways to make concept art and this is just one way. Also since making this piece I've switched from using Modo to Blender /3D Coat, but much of the photoshop process remains much the same in my day-to-day work. I really hope you find this helpful, let me know if you do!
Note: None of the jpegs go over the 3D process itself, for that kind of thing I highly recommend Jan Urschel's Blender tutorials!
-Cleanly Layered PSD
-Color-Coded layers and color key to explain each layer's use
-5 very short process jpegs explaining some of the thought process