Then length of a sleeve cap is usually longer than the sleeve hole. This is done on purpose, as the extra fabric allows for more room at top of your arm so it can move freely. That extra fabric has to get “eased” in to the smaller hole. It takes a little time, but if you do it right, you’ll get that sleeve cap eased in with no telltale puckers or tucks. Kate from See Kate Sew shows how to do it. Get the tutorial at See Kate Sew.
[photo from See Kate Sew]