Now it is time to lay out the stitching holes on the belt loop. Again, a drawing compass works well for marking the line a set distance in from the edge, and a ruler and pencil works for the line across. I like to then mark one starting hole in one of the corners, using an awl.
Then the overstitch wheel is carefully rolled along the pencil line, marking nice evenly spaced dots on the leather. It may help to first lightly dampen the leather. I often will then slightly enlarge the marks with my awl, making it a little easier in the next step, to get the drill bit to locate properly.