No, it's not bad, it's just the way you sew. I know several times (not necessarily quilts) I haven't bothered measuring fabric, by that I mean with a ruler. I compare a piece I want to cut to one I already have cut and trim the second to match the first. Or I'll think "I want this to be about this long (and lay out the fabric and cut it) and I want to cut it into four pieces (so I fold it in half twice and cut along the folds).
I've thought about this sometimes and decided that I AM measuring it - but instead of using a ruler to measure and transferring the size to the fabric - I'm measuring it with fabric. I don't do it this way as a rule, but sometimes. It's like playing the piano by ear and you can't read music. Here you're cutting by eye and you don't need a pattern. Further, some people can hear a piece of music once and play it, others can't. Some people look at a quilt and can't figure out how to duplicate without a pattern, you can. Ditto cooking.
This isn't better or worse, just different.
Tate
Last edited by tate_elliott; 02-27-2015 at 06:44 PM.