Looks pretty sick to me, nice job
I really liked the before image though
Space is really dark and stuff is really far from each other even in a scifi universe
but the main problem with this is the lighting because its all so bright you didn't make the planets look like they were in space around the planet you made them look like they were like huge flat images that happen to be floating there
You could use some brushing and shadowing with some more darkness in the mix