The whole idea of sponsoring people is that a company gives a person money or product (for free or at a discount) in return for advertising. So a sponsored skier should be able to make another skier (the consumer) want to buy the product of his or her sponsor. I think you have to do something that stands out and makes you special to be a good sponsored skier.
For example, if you ride at some place where everyone is really good and can do all 4 7's no problem than just being good, like every one else is not good enough, becuase you are not special; you dont stand out.
However, if you ski in an area where you are one of the only people who can spin past a five, then being able to do switch sevens and 270's on will be able to get you sponsored as an AM.
So I the best wasy to get sponsored is to do something slightly different from the rest of the pack. Learning a new axis is a good start, spining off of natural hits (building a in run a jump does not count, neather does packing the take off), or throwing 180's and 540's in a big line, intirely switch pipe runs. All of these things stand out and will get you noticed. Just doing what Tanner Hall did last year, does not cut it.