I believe the only differences between the original idea and mine was that I found only pretty large balloons and couldn't get them any smaller at WalMart, and that my wreath form is much larger which means I needed more balloons. I didn't really feel like ordering any balloons online. So I just bought 12" round pink, red, white, and black balloons from the store. The wreath form I used is 22" I believe. First, just separate your balloons by color. You'll also need straight pins.
As you go around, you may end up with some spots that aren't as covered, in which case you just need to go back and fill them in with another balloon.
More Mickey Mouse Clubhouse Party posts here:
Part 1 - Invitations
Part 2 - Goody Bags
Part 3 - Punch Box