答案:1. Trim seam allowance.
2. Turn binding right side out.
3. Pin binding to collar.
4. Start sewing at a straight edge.
5. Pivot at curve points.
6. Continue sewing around curve.
7. Finish at straight edge.
8. Trim excess binding.
9. Fold binding to wrong side.
10. Hand-sew or top-stitch in place.