To take measurements from a shirt that looks good on you, follow these simple steps:

The extent of the neck corresponds to the size of the shirt itself, expressed in centimeters (eg. 40) or inches (eg. 17). The measurement is taken on a plane extending the collar, from the center of the slot to the button.

Measure your chest, extending his buttoned shirt on a flat surface and taking the measure under the seam of the sleeve as shown in the picture.
Measure the life taking the measurement from side to side between the fourth and the fifth button.
Measure the length of the sleeve taking the measure from the shoulder seam to the end of the cuff (inclusive).

The measure of the shoulders must be done at the height of the horizontal seam of the big side, measuring from side to side between the seams of the sleeves.

The length must be detected by measuring along the back of the neck seam until the end of the shirt.

To take the measure of the pulse spread it open on a flat surface, as if you were to stretch, and take the full width.

Also published on Medium.