It would be nice to know what sections (within the competition) these are supposed to go in.
To my mind, only the first meets the requirements (any) technically, as it is nicely exposed and well contrasty, playing with DOF and without any distracting elements in the background.
The latter applies to the other two photos, as well, I know, but as to the second I feel that one's underexposed, and I am not fond of the light used, very one-directional and straight and yet too low. As was your POV, I feel - you photographed "up their noses", and that, plus particularly the male's facial expression, makes them look kind of silly. Sorry about that and sorry for being so frank.
The last tells me the least. Not even with the caption offered do I understand that one. I cannot see "thought", as I cannot see her eyes, and I feel that it is the eyes that are the windows to our souls, and in that also the "windows to our thoughts", as it were. One other "up her nose" photo from a very low POV, don't know why you chose that, you may have had a good reason for that (tell us, will you?), and she looks kind of wet and wild, as if this were part of the "trash the dress" session, maybe?