What I do with Cameo fondant is roll out the various shades of greens and browns and use an exacto knife and cut out the Shapes of the various shades. I then place them on the cake kind of ike puzzle pieces.
Hi, this is agreat tutorial. It is a cupcake topper, but you could do the same with fondant for a cake. I think sharonssugarshack.com has a great tutorial on it also. i will try to find it. these colors are so good. hth