Reducing Bulk
Trimming
Light-medium weight fabrics cut seam allowance down to 1/4"
Grading
Heavy-weight fabrics cut one side of seam allowance to 1/8" press wider side to point toward outside of garment.
Clipping
Small snips about an 1/8" from the stitch. Used on an inward curve.
Notching
Small wedge cuts about 1/4" or 1/2" apart. Used on outward curves