I need your expert advice! I would like to put a frozen buttercream transfer on the side of a cake. Has anyone tried this? I'm afraid it would slide down the side. T

This cake is for a cake auction at my school and I don't want to mess it up. Any ideas or suggestions would be wonderful!

Thanks!

I have actually done this. Last year I made my son a Lightning McQueen car transfer. I had extra icing, so I made a checkered flag border. I made it 1.5 inches high.....I did not have any problems with it slipping off.
Good Luck!