I plan to use a fondant mat to imprint a floral pattern on strips of fondant and then apply then vertically to a cake. But I want to color in the flowers with royal icing. So....fill in the flowers while the fondant is flat and let the royal icing dry or put the fondant in place and then pipe the royal icing while on the cake? I worry about the icing staying in place on vertical fondant. But if I let the icing set first, the fondant will not be pliable enough to lay vertically down a two-layer cake. Thoughts?
definitely apply the royal after the fondant is in place..
How were you going to press and smooth the fondant onto the cake if you've already piped on it? I can't imagine this working at all, unless you weren't applying it, but rather just draping it over like a tablecloth.
Definitely fondant first THEN pipe. Don't worry unless it's super soft and runny your royal should stick just fine.