If you added borders to your quilt and they weren't wavy +7
If you got home from a day of [fabric] shopping and the dog did not chew up your pillows +8
If you let the supper pot boil over while finishing that last seam -6
If you were delayed in your applique block because you couldn't find the spool of thread -2
If your sewing studio is neat enough for first-time guests -10 [minus because that means you haven't been sewing]