PURPOSE: To save labors for seam basting, etc., and shorten a sewing time for ordered clothes by preparing correcting dummies with seam basting samples having the sizes of ready made clothes, preparing a processing slip on the dummies and subsequently subjecting a cloth to a cutting work, etc., on the processing chit.

CONSTITUTION: Correcting dummies are prepared on seam basting samples having the sizes of ready made clothes, and a processing slip memorizing picking positions, sizes, etc., is prepared on the correcting dummies. A cloth is subjected to a cutting work, sewing work, a finishing work, on the correcting slip to perform the objective sewing of the clothes. The correcting dummies can be preserved and controlled only for a customer and further provided for the next order.