A few hints are: 1. If you did the bind offs for shaping on the public side of the sweater on the side they explained you will do them on the inside of the sweater on the second side. 2. You always do bind offs at the beginning of the row. 3. You will want decreases that slant the opposite way the first ones you worked did. 4. Practice makes better, I don't know about perfect. Good luck.
I know what you mean about the difficulty of figuring this all out, especially if the pattern stitch is complicated. You have to do a lot of thinking and that can hurt.