Chetnut, take the advice of the other posters. Play all the courses
equally, post all your scores, and you'll naturally advance to the next
tier. People who advance tiers to fast only become frustrated and find
themselves playing with less frequency as a result.
There are no special requirements to advance tiers, only that your ready for the longer tee-boxes when you get there. I believe the new average for the Master tier is around 66/67. This is a closely guarded secret by WGT.