: Avoid over-tightening your lips. Move the mouthpiece until you find the exact spot where your lips resonate most freely with the instrument.
: Daily practice of holding single notes helps stabilize your pitch and develops a "subconscious" feel for high-quality tone. Sound the Trumpet: How to Blow Your Own Horn
Whether you are literally learning a brass instrument or figuratively learning to market your skills, "sounding the trumpet" is about making a clear, resonant impact. : Avoid over-tightening your lips
: The sound begins with the "lip buzz". Form an "M" shape with your lips, keeping the corners tight but the middle loose, and blow air through to create a steady vibration. Sound the Trumpet: How to Blow Your Own Horn