Great tutorial for how to make tissue paper pom poms also includes a Tissue Paper Pom Pom Size Chart. It tells you how many sheets to use for each size pom pom as well as what size the tissue paper sheets should be.
Make Some Tissue Pom Pom Ornaments for Your Christmas Tree
ABOVE: Gold tissue paper streamers are an inexpensive way to add a party touch to any celebration. Cut long strips, fold in half over your ribbon or string, and then wrap a length of crepe paper around the top to secure.