Few of the easiest ways....

1. Effective case studies - multiple case studies showing how you solved major problems for other clients.

2. Celebrity endorsements - get co-signed by a notable figure will INSTANTLY boost your credibility and you can charge a premium price.

3. Media Coverage - getting into the media is EASY. Get featured on major media outlets like fox, hgtv, etc and then can advertise your services "as seen on tv"

There is lots of other ways too. I'm standing by if you want to pop on a quick call.