I like the first one a lot. I think with a tighter crop (say, a square crop using the top or middle portion) this could be a very interesting abstract.
The second one just has too much going on for me (perhaps it also pales in comparison to the first one). If you had been able to have a real person wearing one of those masks hidden in that mix the shot might have had more to interest the viewer.
I like the leading lines of the perspective in this one but I feel it's lacking a real focal point. If there had been something in the aisle (perhaps even in the foreground so that it is still visible and you use the perspective to try to pull the viewer away from the subject, with careful selection of subject and position to create that energy) this shot would have had more going for it. (I'd also clone out the person on the right edge.)
I'm not feeling the last one. It's a decent candid capture, but it seems a bit overexposed (on this monitor), and the composition does nothing for me. The subject is too centered, yet the field of view is zoomed out enough that the character isn't really the story, the situation is. I would either crop it so that the frame was almost entirely this person, or I would have shot it horizontally. The extra space to the top and bottom don't seem to me to add anything to the story, but extra space to the left or right, being on his (her?) level would have added to his/her world. I think I might even have shot it horizontally with the subject to the left of the frame, so that it appeared as though he was turning his back on the bulk of the shot. Just my thoughts...