Select a seam point marker, and move it along the closed curve.
Continue to adjust the seam points until they line with each other and the closed curves all have the same direction, and then press Enter.
Adjust seam options
Flip
Reverses the curve direction.
Automatic
Attempts to align the seam points and directions without intervention.
Natural
Moves the seam points to the way they were at the beginning of the command.