I'm making a big football with RKT and would like to cover it with fondant. Wont it look all bumpy. How do you make the fondant look smooth?

I pre-crush my cereal before adding the marshmallows in order to get a finer texture. You can then also form your shape and rub it with a lot of pressure on the counter to smooth out further. I also use thicker fondant over RKT to help disguise the texture.
I have some 3-D animals in my pics where I used RKT for their heads - the pinata cake (Horstachio is his name, I believe?), the cow in the grass, and the Huskie cake.
BEWARE... large objects are extremely heavy and the cake must have a good support system.
Hope this helps a little!
Lisa

you can also cover with chocolate, bc or ganache to give a smooth finish for the fondant. some people use two layers of fondant too.
xx