I find this tutorial super easy and it actually can improve the look of the top/dress or whatever overall!
What you do?
Create either pleats or pintucks at the shoulder.
sewing machine or needle and thread
flexible measuring tape
fabric pen or marking chalk
How to do it?
Measure how much of the shoulder you want to take in, then create 2 to how ever many you need that would equal the amount needed to take out. Or if you are like me…just guess by eyeballing it and have a seam ripper handy :). So, when you create a pleat, which is what I did, you fold a little of the fabric toward the shoulder and sew a few stitches through it to keep it in place. Repeat as many times as you like! Then for best results…iron iron iron. Which I didn’t do in the picture above, oh well. Thats it!