I am not seeing anything in your background that would scare away potential clients. And actually maybe the opposite.

Do you feel that because of your background potential clients will think you are expensive? If that is the reason you can counter that with the appropriate words indicating otherwise.

Or is it that you don't want potential companies to know you are a sole practitioner?

Only other thing I can think of is something age related given that the majority of clients are typically 20's or 30's.

If you'd care to elaborate I'd appreciate as I am curious and study this type of thing.