Warm up gently before singing
Breathe low and deeply
Keep your shoulders relaxed
Maintain good posture
Use less air, not more
Support the note with steady breath
Raise the soft palate
Relax the jaw and tongue
Open vowels slightly as you ascend
Modify vowels on higher notes
Sing with forward placement
Use light vocal cord closure
Start in a comfortable range
Practice sirens and slides
Work on scales gradually
Transpose songs to a lower key
Build range slowly over time
Rest your voice when tired
Stay hydrated
Avoid pushing or straining
Stop if you feel pain
Work with a qualified vocal coach