The Special Edition Kit contained Heidi Swapp Alphabet Masks. They look like stickers, but they are more fun!
A mask is the opposite of a stencil. The way you use them is you stick the letter onto the page where you want the letter to go. Then use watercolors, acrylic paint or chalk and paint across the letter and the surrounding area. Allow to dry briefly and then peel up the mask.
This process is how I created the Shamu title on this layout.
You can achieve some fun effects when you layer the letters on top of the patterned paper like I did here in this Friends layout.
The mask letters are reusable and do not need to be cleaned after use. You should be able to get a lot of use out of this awesome alphabet!
Remember to check out the gallery for even more ideas for using the masks on your layouts.