A brand is just a promise people have watched you keep over and over.

Reputation is built from repetition rather than description. What people expect from you is an average of what you have actually done, gathered over time without anyone deciding to gather it. You cannot state it into existence, and one impressive act does not create it, because the whole thing is made of consistency.

Decide what you want to be reliable for, then pick something small enough to do every single time. Replying within a day, finishing what you take on, arriving early. Reliability in one narrow area travels further than being occasionally excellent at many.