Use the mark of sewing holes with the diamondmark equally spaced on the sewing line.
In addition, after hand-sewing, you can use the hammered seams to apply strength and weakness to create a beautiful look. (Overstitcher)
Accessories: 4 pieces of links (0.06, 0.08, 0.1 inch (1.5, 2, 2.5, 3 mm), flat screwdriver.
Frame Pitch: 0.1/0.2/0.2 inches (3/4/5/6
(From Amazon.co.jp)