Any idea how I could achieve this look? A friends daughter asked if I could do a cake like this for her wedding. Thanks for any help. Lori

That isn't birch bark:

https://www.google.com/search?q=trellis+impression+mat+fondant&client=firefox-a&hs=ELs&rls=org.mozilla:en-US:official&channel=sb&tbm=isch&tbo=u&source=univ&sa=X&ei=W8KSU8qlL8vuoASv14G4Dg&ved=0CCEQsAQ&biw=1280&bih=861#channel=sb&q=birch+bark+cake&rls=org.mozilla:en-US:official&tbm=isch

Looks like many thin, irregular bands of fondant with a burlap ribbon and flowers.

Rough crusted buttercream?