I think you are very talented for a 21 year old. I'd like to see more individuality and creativity in your portfolio though, it's all very commercial and slick, which isn't negative, but i'd like to see a larger visual repertoire, more vibrance, more colour, more unconventional poses and expressions.
The one thing i think of as a bit kitsch is the music underlining the pictures ! The idea to add sounds is nice, but if i were a client, i think i'd be a bit put off by the choice in music (can't please everyone, i suppose :)).
Anyway, talent you have.