What supports the quality of a product is not flashy design, but rather the accumulation of basic techniques and a consistent design. At the same time, tools and preparation are also important.
The magic of the knee lift lever and stitch ruler
Using a stitch ruler and knee lifter is essential for sewing straight stitches with a sewing machine. Freeing both hands to control the fabric makes a dramatic difference in the finished product. A stitch ruler is an attachment for a sewing machine that allows you to sew at a set width from the edge by aligning the edge of the fabric with the ruler. A knee lifter is a tool that raises the presser foot of the sewing machine, making it easier to move the fabric with your hands. You can sew without it, but to maximize the use of both hands, it is better to be able to raise and lower the presser foot with your knee for smoother work.
Preparation for "handling canvas well"
It is especially important to crease the fabric before sewing, especially when using hard canvas or soft, thin goat leather, which tends to slip during sewing. This "preparation" is the key to accurately reproducing the structural dimensions as designed.