Notching Curves

From CosplayWiki

Clipping and notching seam allowances allows the fabric to mold into a curve. This is what makes the finished garment lie flat, with nice flat seams and edges. If the fabric edge is outside the curve of the seam allowance, a straight snip is made in the seam allowance. This is called clipping. The fabric in the seam allowance will separate into segments allowing the seam allowance to lie flat. Cut from the outside just to, but not into, the seam allowance. If the fabric edge curve is inside the curve of the seam, a notch is cut into the seam allowance. A notch is a wedge shaped cut. This removes bulk in the seam allowance and allows the seam allowance to lie flat. Cut from the outside just to, but not into, the seam allowance.