You're not starting from zero when you launch a business. A decade of corporate experience in your field is real qualification, even if you don't call it that. You already know how to do this.
When you start your business, a lot of people think that they're starting from scratch. In a way, you're starting from scratch for that business, but you're not starting from scratch in your area of expertise because you've been doing it for a long time. You have 10 years of that experience and you've done it for someone else in corporate. That shows expertise without you saying it.
