It does take some practice to cover a ball of sponge with fondant but it is very effective when you get there. There was a thread on here some time ago discussing it.
Wow..Those are gorgeous!! I wish I could cover domed cupcakes that good!!!
I've found this site, it might be a little interesting for you. http://www.dolcesposa.com/wedding-vendors/wedding-cakes-wedding-vendors/temari-wedding-cakes/