When you stare at the clouds, it seems like they are moving from left to right O.o Is this just some random effect I'm experiencing or this was intented, maybe some kind of technique used ? Great work man ! Also, this flying saucer in the clouds seem like cut off a bit (sharp edges on the right side), which, at first I saw as some kind of error. But now, when I try to imagine how would it look if it was really blended smoothly into the clouds, it seems to me like this is better, like this gives some kind of special feel to the piece. Interesting peace really.