Sorry, I think there will be a problem viewing this, the website is www.*********.com but when I go to the site I can't find this particular tutorial. I came across it in the newsletter from American cake decorating.
Here's a video on making gumpaste plaques on a similar fruit decorated cake.
http://www.*********.com/acd/?inf_contact_key=89f0aabc922e9d1015f280b440ee5929ad3eb297668923faf1e84445883a5c04
I place cling film across the cake as soon as it comes out of the oven BUT you MUST leave two sides unwrapped/open for the steam to escape,and then flip the pan upside down onto a couple of butter knives that will act as a wedge between...
I would not do that, I only place the flowers on the day off delivery just before delivery or at the venue.My cakes do not need to be chilled, the condensation will effect the flowers. HTh.
I think it will give you a moist crumb, and doesn't dry out when left a few days. The only way to know is to try it out. Some of the best recipes come out from trial and errors.lol