I need some help from some expert DIY'ers! I found this...

http://2.bp.blogspot.com/-nszkPdsCYN8/TgniTM-yzlI/AAAAAAAABqg/lQc52moIHT4/s640/HappyBirthday.jpg

And I really want to make it but I don't know how! Do you think those paper things are made of tissue paper? If so, would those hold up in a humid climate for very long? I know that picture doesn't show much detail, but I am asking for any help that I could get. Thanks!