Tailored Jacket Sleeve Vent

Pattern pieces for two piece sleeve with vent.

Pattern pieces for interfacing, these are needed to provide structure.

Pattern pieces for sleeve lining.

Iron on the interfacing, mark the seam allowances & hems.

Sew the top & under sleeve together, stitch down to the top of the vent opening, pivot the needle 90 degrees to stitch along the top of the vent stopping at the seam allowance.

Snip into the corner, press open the sleeve seam & press the under sleeve extension over onto the top sleeve.

Fold in the top sleeve vent & hems.

Mark the point where the vent & hem meet, join both points with a line running through the finished vent corner point, lightly press in place.

With the right sides of the fabric together fold over to form a miter & stitch together.

Trim off the excess.

Press open, turn through, carefully push out the corner & press.

Place the lining pieces on top of the sleeve to check the top & under sleeve are correctly aligned, stitch the sleeve linings together to the top of the vent opening.

Snip into the corner to enable you to pivot & stitch the tops of the vent together, as with the main sleeve, only stitch up to the seam allowance point.

See images below how it should look from both sides.

Next, connect the sleeve & lining, this is done on the under sleeve first. Lay flat as pictured, then fold up making sure the points at the top of the vent opening where the snips are line up. Excess lining fabric is tucked under to create ease when worn.

Turn through so right sides are together & sew down from the top edge of the extension with the tuck in place.

Mark the corresponding hem level of the lining on the top sleeve vent. Snip into the seam allowance point of the vent lining & with right sides together stitch down to the marked hem level point.

With the seam allowances turned in pin both hem edges together & sew.

Turn through & press, a tuck will form naturally for the ease. Keeping it free of the sleeve itself, sew the seam allowances together along the top of the vent to keep lining in place.

Mark & sew button holes & buttons for finishing touches.