Bind-offs generally don't match cast-ons, so you're not doing anything wrong there.
When I bind off in pattern, I usually work the stitches as they face men--knit the knits and purl the purls. I honestly don't think it makes much difference since the stitch that you pass over pretty much covers the stitches.
"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