Lipton: Thanks. There's nothing special naman in my procedures but I'd be happy to answer any question about how I do things.
cbrain: Thanks for the remarks. Here are the list of materials I used:
Base - Styrofoam (carved with a knife) and topped with wall putty
Tree - Wire wrapped in masking tape with leaves from scotchbrite pads and Woodland Scenic Turf Material
Tall Grass - Wide Chinese brush
Turfing - Woodland Scenics Turfing Material
All painted in Tamiya Acrylics