Trim the image and spread a generous amount of photo transfer medium over the top.
Spread out with a foam brush. There should be enough medium that you can't see the image.
Use your hands, brayer, or credit card to smooth the image. Wipe away medium that comes out the sides.
Dampen the image as well as a sponge or rag - wipe away the paper until the image is revealed.
Let dry and repeat this step until all the paper is gone (you'll see it when dry). You're done.