ref: here

hrez: here

Thought I would do one more with my shells. Got an email from Mediachance and in it was a tut video using Panel. Did not know about Panel. You do not have to have a sub-preset for every brush style to make a mosaic; can use Panel to modify a current preset to your liking. Pretty cool feature. This one is a hybrid with base fill layer (not mosaic) and top layer as mosaic. Added some drop shadow and stuff to enhance the dimension of the shells. :)