URGENT! Put on cake icing straight after marzipan? or wait a day?

[thelittlebluepills]

I am very foolishly trying to make a fire engine birthday cake for DS2

I have made the cake shape and covered it in marzipan. Can/should I put the ready roll icing on now or wait a day? If I wait should I put the whole cake back in a plastic bag?

Why didn't I find out what I was supposed to do before embarking on this project?? arghhhhhhhh!!!!!!

best to wait a day... but i have found waiting a good few hours to be ok too

Leaving it a couple of hours, unwrapped is absolutely fine. You only need a light crust on it so it doesn't shift when you lay the icing over the top. To get it smooth, the palm of your hand is best on shaped cakes