You may still adopt a poor posture when sewing even with the greatest sewing chair. And this may disrupt your comfort, blur your attention, or even give you backaches.u003cbru003e1- Ensure that your forearms are at a level where they rest on the sewing machine. As a result, the shoulders and arms may be more relaxed. Make sure the armrests on your seat, if any, are the same height as the sewing table.u003cbru003e2- Your chair's back should be at a 90-degree angle. Adjust the back to 110 degrees if necessary.u003cbru003e3- Your knees should also be positioned at 90 or 110 degrees.u003cbru003e4- Likewise, while seated, ensure your feet are flat and at a comfortable angle on the ground. If not, you must adjust the seat height such that your feet flatly contact the ground.