Random wonderful scene. I love sci-fi paintings that don't strive to be ultra-realistic (or, more simply, I love sci-fi paintings with a style), and I can't stop watch your stuff
The two craft on the right in the foreground do not look, 'finished'. They need more work. Also, you need something in the desert to help give the craft coming out of the sand, (going in, stuck in?), some sense of scale. I think the 2 craft on the right need to be deeper into the scene and perhaps add a few larger people on the desert floor or something recognisable to help convey the scale. Great styling though, I can't fault you there.