Here's a few pictures of the cake construction:
I used Wilton's Cakes-n-More 3 Tier Stand. I put waxed paper sheets underneath each cake so I wouldn't get frosting on the stand. When the layers were completely done, I simply slid the waxed paper out and touched up the cake a bit where I had to secure it with a spatula to keep it from moving with the paper. This kept the serving plate frosting-free.
The cake layers were done in green buttercream icing with a (mild) chocolate buttercream road. I used the grass tip to make grass. I think it looks like a Chia cake. Chi- chi- chi-a!
See the sprinkles in the grass? I'll have more on those tomorrow. I piped white shells along the bottom of each layer to help hide imperfections. And believe me, there were plenty. I don't think I could ice a cakeside completely smooth if Martha herself were coaching me on it!