Whats the best way to add Battle Damage and wear to the helmet....I painted mine up last night and then when the paint was tacky to a ruler to it to take chunks of paint off...is there any other ways that work well?
Yes, the best way is the masking method using a layered painting technique. Go to the link below, you'll have to register but it's a very in-depth tutorial that I wrote up on painting and weathering a helmet which can also be applied to armor.