I"ve semn clothing sincer 7th grade, and I love it. I actusally have a harder time with quilts. McCall paterns are my favorite to use, and usdually pretty much on target for size. The bust measurement is the most important because your neck and shoulder fit there is better. You can add and subtract for hip and waist much easier. Just measure yourself before cutting, then measure the area on the pattern piece to compare, make sure you mearsure inside the seam allowance.And, It never hurts to add a little extra at the seams before cutting out, sew on the right seam allowance and if need be, you can take in or let out some after fitting. Good luck!!