His name is Ray Kosby. Only on bittorrent sites is he called Cosby. According to Google, Ray Cosby is also in the 1987 graduate class of Englewood High School in Englewood, CO.
Anyway, I'd work on minimising the motions. Of course there has to be some shifting motion, but your hand falls about a foot and then rises again to cover it. Also, I'd perform the move once more since twice seems to fly by without much effect. I know from experience performing similar elevator moves that, if it's a partial elevator like this one, it often takes two times for the spec to fully realise what's going on; by which time you want to show them at least one more time for full effect.