I was just going to say I have taught people to quilt, and crochet. What I do is have them either sit of stand directly in front of me. They really appreciate that I have figured out a way to help them. Also as for the rulers. When they were having trouble reading the marks on them I had them turn the clear rulers over. That way they were still able to read the numbers and see the marks. Hey it helped. Like the one lady said on a lot of the the cutters you can change the blades to the other sides. So try to find that kind.
Hope these suggestions. Help.
Quilty Hugs,
Ann W.in Indiana