I am attempting my first edible image (icing sheet) today and need to know how long ahead of the event does it need to go on the cake? Will 3 hours be enough? Thanks for your help!

That will be fine. Place it on the cake after frosting but before the frosting crusts. If it has already crusted - very lightly mist the top of the cake with a spray bottle and place the image on. You don't want it wet or the color might run but you do want it moist so the icing sheet will "mesh" with the frosting.

Debbie

I just did one a few weeks ago and put it on the cake the day before then put the cake in the fridge. She thought it was delicious.

The last two cakes in my pics had images on them. I printed the images Monday evening - decoraged the cakes and placed the images Thursday evening and refrigerated them until Saturday afternoon and Sunday morning. They were both fine and delish!

Debbie

The purse cake I just made was finished on Friday and because of a delay in the "party" it stayed in the refrigerator until Sunday, and it was fine. I did put it in the refrigerator (in a covered carrier) because it was still warm here and it was looking a little soft. Janice