Spray paint the object to be painted with light green, and let the paint dry.
Lay out strips of masking tape on a board and draw out camouflage shape outlines. You want the shapes to be lumpy and random, but smooth. Use a knife to remove the areas around the shapes. Place the masking tape shapes on the object to be painted. Now apply the dark green and let dry. Remove the tape.
Repeat step 2 using black paint.
Use the tape method to create smaller camouflage shapes that will serve as white splotches. Otherwise, repeat step 2 using the white paint. Spray on a protective clear coat once the white paint has dried.