I'm wanting to pipe some details on the side of the cake iced w/ buttercream (crusting)

1) Can I pipe it directly onto the cake & it not dissolve?

2) Would it be better to pipe it onto a piece of wax paper then try to put that onto the cake?

3) If I pipe then place what would I use to adhere the pieces?

Thanks

you should be able to pipe it directly onto the crusted buttercream. the royal may soften over several hours, but it should hold up. you also want to be sure the cake/filling does not require refrigeration. The condensation could be a big problem.

How far in advance do you think I can pipe it? The cake is for tomorrow around lunch. I don't want a flop, but I don't want to be piping at the last minute. (It's my dd's cake & I have other things to worry about as well)