How do you make a diaper wreath?

There are several sites that offer instructions on making a diaper "cake" (actually a unique arrangement of diapers designed to look like a cake, for those who don't know). Here are a few of the sites:

As for decorating with the Words "Pamper Me" or other slogans, I suggest looking at sites that offer to sell the cakes, and getting some decorating ideas. Here is an example site with some good photos:

http://www.candlesandfavors.com/index/cP-30/Baby-Diaper-Cakes.php