I posted these instructions for making fondant pearls awhile back, hope this will help.
Basically you roll them into balls, the size you need them, you don't have to be real precise with bubbles so the don't have to all be exactly the same size, then place them on something soft, i use a piece of foam from the craft store so they don't flatten till they're dry enough to handle,a few hours) then put them into to a tupperware with a little bit of the Pearl Dust and shake em' around, and your done!!
There's also a great tutorial on Earlene's Cakes site for making pearls:
http://www.earlenescakes.com/prlinstruct.htm
Jenn
I have just done a 3 tier wedding cake with pearls around each layer. I had already done the bottom layer with a bead maker but saw this post and decided to try this method. Okay it took me a long time but they worked out great and even. Thanks for sharing.
sorry i didn't post that quite right, i had posted that for someone asking how to do the pearls but as bubbles a while back, and i copy pasted it w/o really looking it over.. glad it helped though 
Quote by @%username% on %date%
%body%