1. Print out the images you want to transfer in the actual size that you want them to be on your cookies.
2. Lightly grease a transparency sheet with Crisco and set the sheet on top of your printout. If you are worried about the sheet moving, you can tape it down.
3. With royal icing
, trace the designs onto the greased transparency sheet. All your typical royal icing rules apply here. So, you may need to pipe a section of the image and let it dry before piping the next. Simply set the transparency sheet aside while the icing dries and then re-align it to the images when you are ready to continue piping.