Yep, Amy's video for picking up stitches is very helpful.
Does your pattern specify how many stitches to pick up?? I just made a very lovely v-neck (if I do say so myself!
) in which I used a needle TWO sizes smaller than what I used for the rest of the sweater, picked up every stitch along the back of the neck and a stitch for every row down the v-neck edges. If you'd like what I did in more detail I can let you know.