How do you firm up your lips while playing your baritone?

To firm up your lips while playing the baritone, focus on maintaining proper embouchure by positioning your lips tightly around the mouthpiece. Use your facial muscles to create a seal and support your airflow, ensuring that your lips are not too loose. Regular practice with long tones can help strengthen the lip muscles, improving control and firmness while playing. Additionally, consider exercises that target lip flexibility and endurance to enhance your overall embouchure stability.