my last cake turned out really well but if you look closely you can see corn starch remnants in all the corners and crevices. i tried my best to brush them away but it only does so much. this has been a recuring problem for me. i see so many otehr cakes that look flawless and wonder how on earth is there no cornstarch leftovers anywhere. the brush can only get to so many places. here is a pic...
http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1412381
you could give your whole cake a light spray of vodka if you have an airbrush or you could lightly brush it with a damp brush with vodka. Be careful not to pick up color on the brush from the dark colors and then put them on the white parts.
I have been watching Cake Boss lately and Buddy uses a garment steamer.
Few options..
Rub crisco and then wipe it of with some viva paper to get the excess out. When it dries it wont be shiny, just look polished.
Airbrush with some vodka. Don't over spray~
Steamer..as long as you dont over steam, it should be fine, but if you oversteam then
can create problems.
The last 2 need to dry well before you touch or you can work the fondant.
Edna 
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