If you're picking up along the cast-on or bind-off edge, then pick up one stitch in each knitted stitch.
On the side, the vertical stitches are longer than the horizontal ones you're putting on, so you have to skip some. Usually picking up 3 our of 4, or 4 out of 5 works. You have to experiment a bit.
"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