Here is a picture of the cards I have designed for our Stamp-a-Stack and I didn't use http://www.splitcoaststampers.com/ I just picked the stamp sets I wanted to use and the colors and had fun. For this stamp-a-stack you can choose to do 1/2 (10 cards) the stack or the full stack (20 cards). Of course, the price will be $10 or $20. And you can do as many of each card or all of one card. Hope you have fun stamping.
Please email me if you have questions. I tried to keep the cards simple yet pretty.