Hi feather,
from what i've read so far from everyone responding here and after looking at your work i have to agree that you do need to let your work develop before applying to your preferred schools for the following reasons: in order to understand the comment "he can paint so what?", you can not be truly told easily in a few paragraphs, or even long discussions. that understanding will only come to you from growing and maturing. i know that sounds vague but words will always lack the enlightening moment that only growing up can give you. in fact, once you are at a point where you understand it you will realize how far behind you were from actually having a shot at Yale or the likes. all these discussions regarding skill, gerard richter, technique, ability, are vastly inconsequential when attempting to go to the grad schools you have your eyes on. like mutt mentioned above, it doesn't matter how you create things, but why, because at this point the art world has become so eclectic that formal uniqueness doesn't stand out alone anymore. our current art world is different even from that of richter and even talking about his contribution to the arts is perhaps at this point better left to art history, as a way to learn, not the facts, but how the artists of that time thought with regards to their own contemporary issues.
i believe now schools like yale expect artists to understand that to a certain extent and expect to see a level of human maturity and complexity complementing their work. this doesn't mean you need to have every idea fully realized, but that you have reached a point where you know that certain ideas you have are not always conscious, but are not purely unconscious either. they want to know that you are an open minded person, but with a level of artistic grasp that you will not struggle with formal issues but rather thrive with experimental endeavors. they want an artist with the potential to take what they've done on their own and take it even further (that word "further" again is something that you can only understand empirically).
some of this potential will be shown to them first in the form of a cohesive portfolio, where the main interrogations of your work lay outside the formal aspects of it, into a more personal realm, and secondly in a well composed statement, where these interrogations are expressed clearly and concisely. however, no matter how good you might develop all these points, it also depends on the subjective view of who's reviewing your work. i would say the firmer you stay on your own path, and i don't mean visual path, but the path created by your own life experiences that are then translated into art, the better chances you have to say something that might sound clever by its very personal and intimate nature.
be patient and work as much as you can. there is a great saying: "creative breakthrough occur unexpectedly and unconsciously after an extended period of hard conscious labor"