Does anyone know how long you have to make them in advance (the image plaques) so they are stable on the stick? Thanks

What are you using to make them? Fondant? Gumpaste? Chocolate?
What I did one time when I had only a very few minutes to make a fondant deco stand-up for a cake was cut out fresh fondant and coat the back w/melted white chocolate. Worked great

50/50 gumpaste and fondont. The white choc is a great idea

How did this turn out for you?

I got busy and didnt have time to make it to my friend house to print off the image. So what I did was found a color book page of what I was looking for and cut it out of fondont. It is the Dalmation cake in my photos. ( I just downloaded it so it may take awhile for it to post.)

Thank you for your help. I do want to try to do one.