Well I will be honest , It is hard to get the desired affect w/o an airbrush, a simple wash will do almost the same thing but an airbrush can help you create the Illusion of shadows and depth by lightly spraying on thin coats, I suggest looking into an airbrush if possible , www.greatmodels.com usually has a sale every once and awhile, also If you have a Micheals Craft store near you they usually carry the Badgers which I believe are the best and they usually have a 40% off coupon in their flyers , again a good wash can give you some depth , but to get the same affect as the preshading above I suggest an airbrush , good luck and happy modeling.