How do you build up fine turf (ground cover)?

[Charlie B]

I'll add to Wayne's post as he has it right 100% but I will stress the importance of WET!!!!!When I do scenery if the glue mixture doesn't flow out of the area I don't feel it is wet enough. That goes for gluing ballast too, and I buy Elmer's white glue by the gallon. I dilute it 50-50 with windshield wiper fluid, the blue stuff. The blue does not show much in the finished and dried product.
Charlie