Here is a cheap and quick way to make 10mm scale crop fields. 1. Buy some brown corderoy from a fabric store; 2. Cut it out to desired field size; 3. spray a light coating of Elmer's spray on glue; 4. Quickly sprinkle some light green flock on (just a few light sprinkles and be inconsistent)( I sprinkled it on straight from the bag); 5. Quickly lift up the "field" and shake off as much flock as you can; 6. use a brush to sweep the "field" until just a few pieces of flock are left. 7. Let dry. The process takes about 2 minutes and the results look better than this picture shows! If you want a wet looking field, first dry brush paint with alternating layers of muddy colors.