A lot of people who make cakes think there is some mystery to working with fondant. I say with a little knowledge to help you out you can just dive right in and start making awesome cakes! Below are some of the cakes I have made.
Note* I am not a professional cake maker. I was once paid $100 for a cake that I paid over $80 in electronics to make, but it was for a friend and I got to keep the pan. (it was the ufo cake below) Other than that it has just been for friends and family. Mostly my children.
I did once make a website to showcase my cakes thinking about trying to go pro. I decided against it but the website is still there. Since quite a few of my cakes move or do something, its worth it to go there to see the videos. www.davesonfire.com/cakes
I also have lots of other instructables, if you like this, check them out here
Step 1: The cake
I took a course on shaping cakes once. The instructors were absolutely aghast that I made my cakes with betty crocker cake mix. The way I figure it is you could spend your extra time making a cake from scratch, or use a pre made mix that some company spent millions of dollars developing and spend your time making it look nicer. I have never had anyone complain about the taste of the cake. Im not going to tell you how to bake and fill cakes.
As far as the icing goes, I used to just use the store bought stuff. But I found a Bulk Barn that has a big tub of buttercream icing. Buttercream icing is just easier to work with.
So you have a block of cake or cakes in the shapes you want them. Freeze them for several hours. This makes them much easier to work with and way less fragile. (it also helps when shaping them)