The easiest way to get a pattern to fit you is to measure a garment like it that fits you the way you like. I measured around the bottom of a jacket, its length and the sleeve length. Now I make all my jackets to that measurement. Don't use the measurements on the envelope as you don't know how much ease to use. Measure the pattern pieces inside the seam lines to get the finished size. There are tables of how much ease, but primarily for anything but coats and baggy clothes, it is 2 inches more than your actual body measurement.