Our daughter was given her name sign at her school (Florida School for the Deaf and Blind) by one of her teachers. From what I understand it is best to let a deaf person give you a name sign because they know the language better and would know if the sign means anything offensive. Although, I do just use an "a" (just like you use it when spelling, not near any body part or anything) when talking about her older sister because she doesn't have a name sign (I am sure this will change over time, but it works for now with our youngest). Maybe someone else will weigh in and let you know if that sign means anything else (if not, I am sure it would be fine as a name sign), I am just learning sign myself so wouldn't know if it meant anything.