Oh, I am sure it works if you guys do it -- I've seen your work

Just want to make sure I get it right.
Also, can I hijack this thread for one more related question? How do you pick up stitches around the neckline or the armhole where there is a decrease? The edge stitch creates a neat slope between short rows, like a piece of plywood put on the stairs

But it also creates a rather big opening and sometimes I have to deal with it later, usually when weaving in the ends.
So how do you do it? Pick up every stitch when there is a decrease? And how does it work together with skipping one?