One way to easily make something smaller is to use smaller needles/ thinner yarn.
Another is to just subtract a percentage of stitches. See what the gauge is, and determine how many inches wide you'd like it to be and cast on that many at the bottom. Then you can do the decreases the same way, I believe.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry