Hi,
I put rolled buttercream on my cookies and then put an edible image on top. I find that once I bag each cookie, after a day of two the colour on the image fades. Does anyone know why this happens and how it can be prevented?
Thanks

Don't exposure your cookies to light.

That's right. Direct light will cause them to fade.
One time i made edible image cookies for my son's birthday party that was outside in the backyard. The tray of cookies was in the sun and the images were lightened and slightly distorted (from the food coloring melting, i guess).

You can change your print quality when you go to "print" and then go into properties and look for printing quality, good, bad or best (I am not sure how it is worded because every printer is different). Hope this makes sense!