Snow globe pendant

I saw this beautiful pendant on etsy (which of course means it was created by someone and not mass produced).  I really liked this and would like to make a few of them this next Christmas ...never hurts to plan ahead :D.  Here's the inspiration:

Now, I know nothing about resin nor how to work with it, but I thought I would some translucent clay like from Sculpy or Lumina that air dries.

and this mini winter tree stamp:
which I found here: http://www.rubberstamptapestry.com/SearchResults.asp?Search=winter+oak

I figure I can roll out and bake the disk, stamp on the design in white and sprinkle some 

glitter on for the snow effect.