Your measurements will be wrong. Basic How to 1. Measure from center back at neck base along shoulder and down the arm to wrist with a slightly bent eIbow. That point is the back of the neck 2. With arms relaxed at sides, Men measure around largest part of chest.
Women measure around fullest part of bust.
Measure around waist at narrowest point. Measure from center back at neck along down spine to desired ankle length. That point is the back of the neck 5. Measure around base of neck allowing for comfortable fit, or measure shirt collar that fits you well. Lay collar flat, measure from button to hole at far end.