Not at all, actually.
If you're giving your business card out, they'll already know you're a designer - that's why you're giving them your card.
If someone searches for your site, they'll already know what they're looking for.
If your logo appears on a website you've designed, it will undoubtedly be prefixed with "designed by"
If your logo is on a CV, you'll be giving it to design agencies.
No understanding is necessary because there's already understanding in place through the context in which your logo is being used.