Giving yourself title will always be seen as a big ego trip by others. Stop to pretend to be and be.
Big title are just feel good ego buzz. They don't build business.
Action build business.
"Don’t tell people how great you are. Let your actions prove it to them. Let them give you the title. Because when they give it to you, you are truly deserving of it." - Mike Michalowicz
If you think you need to tell someone what you are, then you're not much of what you say. Show, don't tell...
Title comes from people around you. If you deserve a title, they'll give it to you. So, if you want to have a great title, better be great!
If you want something from others, you're better to give them a lot first.