Digital exercises/studies

Hey guys, just wanted to share this environment digital study I did last night along with a few weapon studies that i've been doing to get some practice with working in photoshop. For the environment study, I grabbed a random piece from Blizzard's concept art gallery and did my best to copy it without grabbing colors or just tracing from the original. It's a great learning tool doing things freehand like that and I feel I really got a lot out of it. Expect to see more of these in the future as well as original ones from me. I'm new to digital painting so these being my first attempts have been a lot of fun.

My copy is the top image, the original is on the bottom, I believe it's done by Peter Lee, but I might be mistaken since there's no signature.