I've seen the mountain theme tutorial here on CC, but my client wants a cake that has two roads coming down on both sides and I'm not sure how to do that. My problem isn't really the sculpting, but the boards under each layer of cake. It will be 3 different flavored 10 inch cakes and one 8inch on top. I've made two sugar pieces as requested and they want one running up the mountain and the other running down. I was thinking of doing each layer separatly, starting at the bottom, then stacking (just to measure and sculpt) the next layer, line it up with the road, sculpt...etc until I got to the top. Then glueing them all together with buttercream and running a long dowel down the center. I'm also using bubble tea straws for support after the carving as well....any suggestions?