Looks pretty cool. I dig the lighting and the composition. A few critiques: The chromatic aberration seems out of place and doesn't really serve any artistic purpose, at least in my opinion. The atmospheric distortion is cool on the wheel, but it would also affect the small hill in front of it, since it's pretty much the same distance. Right now it's too dark, and would have the same level of haze as the wheel. As for the wheel itself, if it's as gigantic as you depict it, it wouldn't have that detailed a texture on it. It would be so large and far away that you wouldn't really see the detail you have. The way it is now is at odds with it's scale. The weathering of the wheel also is pretty uniform and doesn't have much art direction. Worn objects have wear and tear, but in predictable spots, not over it's entire surface. The clouds are cool, but look a lot more painterly than everything else. I suspect the ground and wheel are a mix of CG and paint, and the clouds are painted. The clouds on the right seem a lot different than the ones on the left, and look repeated. They're different enough but the shapes look like a pattern. I taught CG and Illustration in College, so sorry if it seems like I'm being overly critical. These are just things I notice since it's the type of stuff I deal with on a day-to-day basis. Cool stuff over-all, keep it up.