anyone know how to get that "feather" look on a cake...

have seen "feather wedding cakes"...
but a co-worker has a cake order for a grooms cake...w/a rooster theme
just not sure how to get a feathery look...if you have any ideas...please suggest...
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Here is a link to a thread from a few days ago:

http://www.cakecentral.com/cake-decorating-ftopict-5295-feather.html

Lots of good info regarding feathers!