Hi,
I am going to attempt a transfer picture onto a cake using the piping gel method. Once the image is on the cake Instead of using a star tip to fill the image in, I wanted a smooth look. For example, I am transfering the Boston Red Sox logo picture and want the "B" filled in real smooth. Do I just thin the icing as much as I can and let it almost 'flood' in?

What if instead of piping the transfer to the cake, you did it on a piece of wax paper and let it dry. Peel it off the wax paper and position on cake. Outline the picture with thick RI and then thin it out w/ water and flood the outline. With this way you don't have to worry about touching the cake and you don't have to use a mirrored image.

Too funny! I am making a Boston Red Sox cake today too. I made a RIT if the logo because I didn't want stars either. Maybe you can fill it in with thinned buttercream and smooth with your finger?

Thanks! I will make sure to post the end results