Brad G. answered 07/01/19
Sign Language, Guitar, or Basketball Tutor
When you are working with nouns you can spell them. Especially specific names. BUT you can assign a sign to certain Nouns. The issue is, if you make up the sign, if a new signer comes into your store thy will spell it not knowing the sign you made for it. Unless it goes viral in the community, you never know.
I would spell it first and then sign AMERICAN. Then with that person you can always sign American. If a new person comes in spell it first and then sign AMERICAN.