I've been a knitter for years but have never tried anything more difficult that knit a row, purl a row. I am trying to knit a hat now, and I'm stuck. It says to include 12 stitched evenly across last row. Can anyone translate this for? Does it mean to disperse them throughout the row or add them all at the end or the beginning? This is a very important project - it's for someone who's having chemo treatments and I want it to be perfect. Please help!