You're gonna want to start by getting your name out there first. Make a website to get people to know your name and what you do best. Then find connections so you can expand the possibilities. Its great to be starting your own brand by the way. Your name would be good enough.
That might be a hard task .You're going to need connections to get that kind of job. But it would be so cool to be working with pro athletes especially living legends. Good luck though.