Step 5. Put your pattern pieces on two double folded pieces of fabric (so that you have a mirrored pair of each). Cut out, adding seam allowance along both sides of the sloping line.
Note: How much seam allowance you add depends on how you decide to finish off the sleeve in step 6. For option A, add 0,7 cm (1/4″); for option B, add 1,2 cm (3/8″).