Looks interesting, to be honest without knowing much about it it's hard to say when it's set given that if it's a soceity where someone build "a city in the clouds" at an earlier time period it's conventions might be from an earlier time.
That said, there is nothing at all "Steampunk" about it at all, not one bit of punk to be seen anywhere. Retro-future perhaps, but not Steampunk. I am REALLY beginning to hate the term "Steampunk" and how people throw it around nowadays. I think some people really need to expose themselves to some 1980s culture to get the right idea. Look at some actual punks, or the fashions worn in say "Friday the 13th: The Series" (who were by and large not punks, though a few did show up) to get the idea of how things should look both for ordinary people and punks. Then add the retro-future technology, that should look less like it was riveted together by an old world metal worker, but like it was welded together by some dude with a mohawk and a chainsaw, even if the functionality is similar. That's Steampunk. Not one example of big 80s hair in that entire trailer, and no self respecting punk or even one of the bad guys in that kind of fiction would be wearing suits like the ones you see there which are totally normal from an old time period. Add some leopard or tiger print patterns to it, and put some "Sid and Nancy" on the record player for the guy we saw and he might just barely pass. Take the girl give her some skin tight stirrup pants, a baggy shirt bound off at a waist at a wierd angle by a spiked belt of patent leather, increase her amount of hair x10 billowing around her, add some fingerless lace gloves and then she might pass. Replace what appears to be brass with steel and blackened iron, make the rivets more chaotic and uneven, and greatly reduced in number with a lot of the things instead being held together by very obvious and perhaps intentionally sloppy welds. Remove most of the clear geometic shapes and right angles, and make everything look uneven and a bit off so your eyes scream for having to try and find conventional perspective on things even though upon close examination it all does hold together.... then it would be Steampunk. Or basically redo the entire thing.
Oh yes and the robot needs spikes and extraneous serrated razor blades.
