I made this batman cake for my son's 8th birthday, since he LOVES batman. I rented a batman cake pan from the county extension office. I outlined his ab muscles and chest w/ a round #5 tip, w/ black then i used a star tip size 18 for all the grey and rest of black. I used white for the eyes and face, and w/ a knife i frosted the yellow background and the blue, and his belt. Turned out really well and my son loved the cake!