I ran across this handy tutorial for raising a simple neckline on a pattern this week. Here is the tutorial with instructions. Please note that this method will only work for simple necklines. Also, if the blouse, dress or jumper does not have a button or zipper opening in the back, you must be careful not to make the opening so small that you can't get your head through it! "Lady Lydia" also shows how to make new facings to match the new neckline – an important step in altering a neckline.