Disclaimer:: I'm generally an evil asshole when it comes to critiques - only because thats how i expect other ppl to crit me. I find ppl usually give too many compliments and i hate NOTHING more than "ooh thats awesome i love it!" ... that doesn't help at all. So, in an attempt to point out only my opinions of potential flaws with things to try to further develop a work of art into something better, here is my hopefully compliment-free and bitch-ridden critique.
First thing i noticed was how Central everything is, and every creative fiber in me yelled Uncle. I'm more of an artist and NOT, by any means, a graphic designer so speaking in SOLELY artistic terms - I don't like the centrality and linear-ness of it all. This is lady GAGA. there is NOTHING linear/central/normal about her and i think a poster should reflect that. I adore the elements that make up the various bits - but then i have problems with some of the specifics. The text looks like some basic Adobe font even though it was treated very nicely. I question the nostrils slightly, and think that either something should be added to make the face a LITTLE more obvious _OR_ remove them altogether?... okay actually now thinking about what i said earlier about centrality - now that i SEE the face i can tell it's obviously not central at all - i really like it. Maybe a slight emphasis on that face... Ooh i know what it is! the top object with the eye->LadyGaga morphed thing... that LOOKS like an object apart from the lips and both of those are just set up at cross angles down the exact same vertical central-point - thus, it appeared horribly central when i first saw it.
So i say you should either tilt the entire "face-object" slightly so it's a LITTLE bit more upright - maybe only so that instead of being 135-degrees off the top-left corner make it about 110?
Now the ARTIST in me says this is too flat. But this is a poster and that's what posters are supposed to be, right? i dunno lol i'm dying to see some "space" in it all but that wouldn't work - i just had to point it out O.o
And my last bit of advice - the "goop" dripping off of Madam Gaga's lips there - it's too unattached - bring it to the foreground and maybe splatter a bit of it on her lips or the teeth?
GOOD LUCK GOOD LUCK GOOD LUCK!!! I hope this works out for you
(lets see some of your other stuff!)