Lay the shirt flat on a clean surface
Choose which shoulder you want to cut
Mark the neckline and shoulder area with chalk or a fabric marker
Cut along the shoulder seam if you want a one-shoulder look
Cut a wider neckline if you want an off-the-shoulder style
Make small cuts first and check the fit
Trim gradually until the shirt sits how you want
Cut both sides evenly if you want a symmetrical off-the-shoulder look
Stretch the cut edge gently to soften the shape
Try the shirt on and adjust as needed
Remove loose threads with scissors
Wash the shirt if needed to help the cut edge settle