Looks pretty good. The size is a bit small for a busking table though. 16" won't cover the typical tray stand dimensions. You're on the right track though, although for that price a yard of fabric (36"x52") will cover a lot more. It should work if you just centered it on a table top but of course it wouldn't go all the way to the edges.
Dave, I disagree with you. My busking table is a tray stand with a top that is 12" X 24" This is all the room I need. I bought Jimmy Talksalot"s new book and am working on writing a new show that doesn't use a table at all. I have all the effects worked out and the kid's show patter but writing the patter for adults and kids is what's taking the time.