Notching and clipping
Cutting small V-shapes or slits into curved seam allowances to allow them to lie flat when turned.
Where it is used
Cutting corner notches
p. 13- Cut notches at a 45-degree angle, stopping just before the guide marks. 1 mm away from the marks.

Trimming and Notching Front Edges
p. 10- Trim the seam allowance at the corners of the front edges. Make small notches along the neckline seam allowances, stopping 1-2mm before the stitched seam.
