Mark,
Thanks, I use the standard static grass technique. I made a homemade applicator using an Harbor Freight electric fly swatter with 2 D cell batteries and connected it with a small strainer. I use diluted white glue or Static Tack brushed on a surface that was previously colored with various shades of Woodland Scenic pigments. Various size grass tufts in the similar shades as the static grass colors are applied before the next step. I use 2mm to 6mm static grasses in various colors, mixing mostly autumn, straw, spring and dead shades in the initial applications. The ground lead from the applicator does not need to touch the surface, only to be near the target of application. I found out that longer than 6mm static grasses are prone to "laying over", defeating the upright look of grass. To add height I use War World Scenics Layering Spray, using a small finger pump type bottle to give a fine spray that attaches to the standing follicles. Same techniques and materials as in the initial application. It's not hard to do, some experimenting and practice offside and a nice selection of colors and lengths will help with confidence and technique.
Rich