My first reaction was “Wow - this is cool!”. But ya just had to ask for feedback, didn't ya. Soooo, after looking at images of my own. I think the earth needs to be much brighter, or the sky much blacker (Yes, blacker, no atmosphere means no color at all) but only if you’re being nerdy. But if you want it to look good then appeal to our misconceptions and go dark dark blue. The Lunar surface color and value look great, but the curvature and perspective you gave it look off. You have us looking down INTO the most distant craters, and maybe just showing us the near rim would be better - we know they’re round and the brain will complete the circle. Also the curvature of the moon is too great, I’ll include my reference photos. Also, I’d go a bit deeper on the crater wall shadows, even with reflected light they would be darker. Now, to actually answer your question and stop annoying you, I think the Command Module looks great but that the dark side needs to be even darker. There would be no reflected light. This is a tough subject to paint, as none of us have actually been there or seen it. The photos we have seen all have the limits of photography in them and our only frame of reference are those photos. Overall, I still think “Wow - this is cool”. Happy New Year.