For example, if you want the sleeves to end right at your wrist, but they are too short at this length when you bend your elbows, then you might need to shorten them so that they end about 0. 5 cm (0. 20 in) below your wrists instead.
You may want to use a ruler to help you get a straight line and to ensure that all of the marks are the same distance from the end of the sleeve.
This will leave a little extra room in case you need to lengthen the sleeves again in the future.
Be careful not to rip the fabric as you do this! If the shirt has mitered corners around the buttons, you’ll need to open that up, as well. [5] X Expert Source David PewProfessional Tailor Expert Interview. 5 January 2021.
You may want to pin the lining up inside of the sleeve to ensure that it will not get in the way when you cut the outer fabric. It’s a good idea to press the pieces of the sleeves to ensure you have nice clean edges to work with. [7] X Expert Source David PewProfessional Tailor Expert Interview. 5 January 2021.
Repeat the same process for both sleeves.
If you cut the lining to the exact same length as the finished sleeve, it will pull and make the sleeve look puckered.
Remove the pins before you sew over each area to avoid damaging your machine. You can also sew the sleeve by hand, if you prefer. [13] X Expert Source David PewProfessional Tailor Expert Interview. 5 January 2021.
After you finish sewing the first sleeve, repeat the process for the second sleeve.
