desert diorama sand

Ratbat, to get the dunes I have used aluminum foil before and got it to the desired shape, glue it down to the base and coat with white glue which makes it hard. Then coat with sand until you get the look you want.To get the wind blown look Put down thicker lines of white glue and coat with the sand works good around bases of treees and such also.

Hey ratbat2, you may want to check this thread out, I think it has some info that can help.
http://www.finescale.com/fsm/community/forum/topic.asp?TOPIC_ID=10364