That is how I would do it.
yeah I would suggest the same! I would try to tackle it by going to a "scrapbooking" or "stamping" store and try to locate a rubber stamp that is the two letters in a similar print. I don't know if you have those in the states though, so maybe on line? That way, you can also alternate which letter you start each line with??
I guess you just need to make sure the stamps are food grade/food safe?
OH! or do you guys have wooden cut out letters at like "Wal-mart" or "Home depot"... cuz they would work too if you got them on a smaller scale??
oh! And lustre dusts... LOTS of luster dusts....
or if you airbrush, amerimist! happy caking, I'll watch your gallery to see how it goes!! all part of the learning curve!!