It's quite an enjoyable piece, if rather repetitive and a bit too tight in dynamics. It has an interesting "oomph" throughout the whole track and while I wished it had a more dynamic progression, perhaps with more variations on the theme, I don't really have any particular complaint to point out speaking of structure. I like how the sound pans between the stereo channels, as it's a nice detail and it helps keeping the atmosphere a little more refreshing to listen to. I would work on making the sound less compressed and more immersive, by possibly introducing more background synths and leaving space for other themes to take place. It's a good effort nonetheless.
//FD