I made my skirt 30 which falls a few inches below my knees and im 5 10. You can put an elastic band around the waist to mark the correct placement.

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The correct way of talking body measurement for the skirt. It helps to bend side to side to identify exactly where to measure. Standing against a flat wall without shoes from floor to top of your head. For a skirt or pants choose the pattern size by the hip measurement. Measure the circumference of your chest. Stand straight on the floor. A 17 3 14 so 14 d.
Your choice will be determined by your hip measurement. C hip measure the hips at the fullest part usually around the seat. Without any doubt body measurement is an art. Find your measurements for the two front panels of the skirt. Measure that length from the natural waist and mark it on the skirt. Or put on the garment and adjust the hem to your preference.
Before taking body measurements keep in mind the following factors. Best way for taking body measurements for sewing your clothes measuring is the last thing i like about sewing. Directly under the arms straight across the back. Always use a non stretchable measurement tape. Hold the tape measure comfortably snug but not tight. If your measurements fall between two sizes consider your bone structure.
To find your d measurement subtract 3 from your a measurement. D high hip measure around the fullest part about 3 4 below the waist. You could get this measurement from a similar garment you have that you already like the look of. If the skirt is full use your waist measurement to select a pattern size. When choosing pants and skirt patterns compare the waist and hip measurements. If you have a skirt length that you know is flattering on you use it.
I mark the center front and center back then tie the elastic around my natural waist about belly button level hip widest part and bust fullest part. In this case id go with a size 14 pattern. For the upper body the high bust measurement is very useful and can help avoid starting with a pattern that is too roomy in that area. It is fun only if you think about the final fitting garment you get otherwise it can get tedious especially when taking sewing measurements of wiggly kids like mine. Place one end of the tape measure at the fullest part of your bust wrap it around under your armpits around your shoulder blades and back to the front to get the measurement. When i measure myself i pin 18 of wide elastic material to a tight spandex dress that i slip on.
How to take proper body measurements. B waist measure the waist where the body bends. Looking at the example above the high bust measures 365 and the full bust is 38. Check out the easy to follow instructions for getting accurate measurements for each body part below. To find your e measurement subtract 4 from your b measurement. There are some rules that we have to follow to get the error free body measurements.
Measure over the undergarments you normally wear. Around the fullest part of the bust and straight across the back.