I have never made a carved cake, so I can’t help you there. I can help you with an amazing fondant recipe. It is easy to make, tastes great,and is so wonderful to work with. Here is a link to the recipe. It is all I ever use!
http://artisancakecompany.com/2012/11/the-best-marshmallow-fondant-recipe-ever/
Toni, Pennsylvania, https://www.facebook.com/WhiteCraftyCakes