Donot take this too tight. Always with a relaxed chest and arms down at side. Vertical proportions are the relation of your body parts to each other and as a whole. Measure from the highest point on base of side neck to bust point nipple position. Neck round measure around the base of the neck slightly loose. Short waisted your waist is above the halfway mark between your bust line and your hips.
Measure chest horizontally around body over nipples and parallel to the floor. 3 shoulder to shoulder length. It is in this order for the vertical measurements i assume 1 body length. How to measure a vertical jump you probably dont have access to a 500 vertical measurement device like the ones you see at the nfl combine but you can still get an accurate measurement of your. With all of the possible lengths and combinations body shapes and sizes you get billions of body variations that need to be dressed differently. Then the horizontal measurements.
Short legged your upper torso will be longer than your lower body top of head to hips measurement will be. Long body short legs. The length of your legs compared to your upper body your waistline your head size and neck length all factor into vertical proportion. Long waisted your waist is below the halfway mark between your bust line and your hips. Although a balanced vertical body shape when the 2 halves are roughly equal is theoretically ideal you still need to choose carefully. Suggestion use a pencil aligned vertically with back of the ear lobe pointing down to neck base to locate the highest point.
The position of a waist or a hemline can still visually change your shape and shorten your legs.