So as per Fabees request, I have prepared a post on setting in sleeves!
There are two typical sets of sleeves that you will see on most garments.
A set sleeve and a puffed or gathered sleeve. There are other kinds but we will leave them for now.
While both were fashionable in the 60s the one we are going to focus on today is the clean tailored finish of a set in sleeve.
When you look at a sleeve pattern and try to piece it together, you will notice that there is always excess fabric. This is great for puffy sleeves, but for set sleeves we need to use a technique called easing.
Ease (as a verb) means to move or shift with great care. And so this is the principle of set in sleeves. Going slowly, taking you time and being careful will result in a well sewn shoulder seam.
With practice you may get quicker but for now be careful and take your time.