用銀筆按大底弧度在鞋面上垂直畫線，保持劃線弧度與大底弧度一致，鞋面后跟

Use a silver pen to draw a vertical line on the upper of the shoe according to the arc of the outsole, keeping the scribed arc consistent with the arc of the outsole, the center point of the heel of the upper and the heel of the outsole must be aligned, and the upper must not be skewed

Use the silver pen to press the large bottom arc on the shoe vertical line, to maintain the dashes arc and the large bottom arc consistent, the heel and the heel of the large heel center point need to be aligned, the upper face can not be skewed

Use a silver pen to draw a line vertically on the vamp according to the curvature of the outsole. Keep the arc consistent with the curvature of the outsole. The center point of the heel and the heel of the vamp should be aligned. The vamp should not be skewed