How can I attach printed rice paper decorations to cakes / cookies? I bought some printed rice paper decorations (flat circles of rice paper printed with edible ink) for my son's birthday party. I'm not sure what the best way is to attach them to cakes / cookies and I don't have a lot of spare time to experiement.

The options I can think of are:


make my own cookies and press them in to the cookie - either before
baking or more likely after baking but while still warm and soft
place the rice paper circle on top of a pre-baked cookie or small flat-topped cake and pipe some form of icing or frosting around the
edge to hold it in place
pile butter cream icing on top of a small cake, press the rice paper circle onto the butter cream icing


What I ideally want is to be able to do this the day before they are needed, so as well as being held properly in place, I also would like the rice paper not to go soggy / curl up and the ink not to run or leak out of the rice paper.
When I've seen them used, they first frosted the cake, smoothed it out, then placeed the rice paper on top.

My understanding is that the moisture in the frosting can end up melting the rice paper, so that it basically disappears into the frosting, with the ink effectively transfering into the frosting.

As I've never done it myself, I have no idea if there are any special tricks to it, or if you need to use a particular frosting / icing recipe so that the paper will melt away.

update: after a little research, I have reason to believe that normal rice paper won't disolve into the cake but there are special 'frosting sheets' that will.  another recomendation was to leave enough white space around the image so that you can cover the edge of the sheet with a border if it starts to curl up.