Set-in sleeves are kind of tricky, and there is an easier method.
This method is still good to know, because you might find yourself in a situation where you want to modify/add sleeves to a top that already has the side seams sewn up, or doesn’t have side seams.
Difficulty:
Step 1
Here we go. We’re starting with the side and shoulders seams already sewn, so we have a basic sleeveless top. The sleeves have also been sewn up and cuffed.
You can ignore the hood in the bottom right hand corner. That’s for later.
Step 2
This is each sleeve folded in half.
Mark the folded edge at the longest point with a pin(red dots), and the shortest edge (green dots).
The green dots will wind up in the armpit area and the red dots at the shoulder.
Step 3
The corresponding points on the top have been marked with the colored dots. The shoulders in red and the armpits in green.
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Step 4
Turn the top inside out.
Keep the sleeves right side out, and insert them cuff-end first into the arm holes.
Match up the armpits and the shoulders.
Step 5
Here’s a sleeve inside the shirt with the edges lined up with the armhole.
Pin around the armhole- you may have to “ease” the sleeve into the armhole a bit, which means stretching it to fit.
Step 6
Sew around the edge, following your pins. Make sure both layers are kept flat as you sew over them. The body of the shirt likes to bunch up as you’re sewing sometimes.
Step 7
Here’s the edge after being sewn together, with the sleeve still inside the top.
Step 8
Turn the shirt right side out again. Woo!



















Thank you for this great tutorial! I was just not understanding the pattern (I thought I was a more advanced sewer than I apparently am) and this really helped!
It took attaching about 100 sleeves before I could do it without pinning the sleeves inside out or something silly like that! It’s just an odd place to sew!
[...] this online tutorial for making the robes. I couldn’t find material wide enough so I had to improvise some sleeves and followed this tutorial for adding them. (Though there is an easier way if you haven’t sewn up the side seams yet.) Sadly, the [...]
Thank you so much. Best tutorial