Your environments are really beautiful, especially the first one with the city canyon, and the canyon city type one in the middle with the blimp things.
I like the top 3D texture one, but it needs some mountains or clouds or ruined buildings or something in the background to give the foreground scene some context. The second 3D texture one is looking too closely at the surfaces so it has that annoying fake 3D look like a scene from a video game.
Your character faces (and perhaps hands and bodies) need work. Your creature/character stuff is clearly not as strong as your environments.