Attach to your machine for more accurate seams
http://www.clotilde.com/detail.html?code=395001&source=AUTOEML
Check out the other neat notions and etc I found:
http://www.clotilde.com/detail.html?code=411036&source=AUTOEML
http://www.clotilde.com/detail.html?code=333008&source=AUTOEML