Easing in a sleeve cap is one of my least favorite sewing tasks. All the care with basting and pulling, and I STILL get puckers. Maris from Sew Maris shows how you can set in a sleeve smoothly, and without basting stitches. YES!! I am filing this away for the next time I have a sleeve that needs easing in. Go to Sew Maris for the tutorial.
[photo from Sew Maris]