I'm working on a cake that i need to airbrush a section to make it all one sparkly sheen color. However, i also have a band in the middle of the tier that i want to adhere crystals too in a pattern. My question is this - the last time i airbrushed, i had a hard time adhering anything once the airbrush color dried. Do i have any working time before it dries, or should i use some special method to attach the crystals? Maybe i waited too long the first time (a day)? Please advise!

Can you brush on a tiny bit of piping gel where the crystals go?

yes, i'm prepared to use whatever i need to, just need them to stick. I thought i'd use my gum glue but last time it got goopy and messy, maybe i used too much?

Do you want the crystal band in the middle to be the airbrushed color?

yes, it's all the same color, just the band is going to be sparkly(i hope)

any other tips, need to bust this out early next week...! thanks!