Chalk or fabric pen
Optional – straight ruler
2. Take out the shoulder pads here too, if you don’t like them or you’re planing on taking the shoulders in.
4. Iron the jacket’s seams allowances at the seams together, so it will flatter and easier to sew. You can add pins here to make sure it is extra straight when you sew, this is especially important with jackets that have a pattern that it’s pattern needs line up perfectly.
6. Sew a straight line stitch down the seams following your markings – you can make it a basting stitch (very long stitches) first so if you make mistakes or you don’t like how it looks, it will be very easy to take out. If you want it to look less boxy and more fitted to your natural waist, then sew a curve – it will taper starting from beneath the armpit going bigger toward the natural waist, then taper smaller again toward the hips or bottom of the jacket. If you want to keep it boxy, then just sew straight lines, making sure to taper at the top. You can mark with a ruler to help you taper if you like.
7. Repeat with the lining. But you don’t have to be as precise.
10. If you want to take in the shoulders which we didn’t with this jacket, make sure the sleeve is flipped inside the jacket so the sleeve and the jacket are touching right sides together. Then sew a curve from mid or bottom of the shoulder up and over to the same place on the opposite side. This is one of my favorite tricks! (Go here for that image)