This is a very easy and fun way to make tiny stained glass windows. They would be good for a dollhouse or a model of a church or for jewelry or window hangings.
You need to start out with some stained glass windows to trace. What I did was visit Google Images and find some pictures to copy and print out. First I looked for "church stained glass" and found a panel that I liked. Then, since I am from Chicago, I thought of Frank Lloyd Wright and Louis Sullivan. Both men are most famous for their architecture but they also designed gorgeous windows for many of their buildings. There are a multitude of Frank Lloyd Wright images available online. You can also purchase or locate a Dover book that features his stained glass patterns. For Sullivan I found a round window from his Auditorium Theater to complete my trio of pictures.
I printed the images out (remembering that they would shrink about 40%) and used a black Sharpie to outline them onto plain Shrinky Dink paper. You color on the rough side of the paper so that the ink adheres. I then used colored pencil to fill in the spaces. I cut out each image. You may decide to reverse the images before printing them out so they will be facing the right direction when viewed at the end, assuming you view them through the clear side of the Shrinky Dink.