Take a little pearl ex out (a really small amount) -- for workshops I like to put it in a powder pal tray to contain the mess. You only need a little on a dry brush. Brush over versamark -- then to clean excess, wipe the card with a swiffer type dry wipe. Works great and my SU customers love that tip.
I also teach dipping a blender pen into pearl ex and coloring just like with pastels. Again -- never dip into the bottle with anything wet to prevent clumping.
There are a lot of ideas out there for pearl ex. A great site to search around is
www.usartquest.com -- they were an early distributor of the product and have lots of ideas there.