Step-by-step procedure (basic flat collar)
1. Make a perpendicular line
2. Mark the upper right corner as point A
3. From point A measure 2 1/2 inches downward and mark it as point B
4. Point A-C and B-D is 1/2 measurement of front and back neckline or (10 inches standard measurement)
5. From point C-E measure 3/4 inch
6. From point D-F measure 1/2 inch
7. Using a ruler, connect point E-F
8. Point G is the center or midpoint of B-D
9. Using a hip curve connect point G-F