Kathleen often expresses concern about doing grafting at toes and other seams.
Over 40 years ago, I learned from a library bok -- I suspect either Barbara Walker, but cannot remember.
The author expressed the philosophy that one shouldn't diminish the suppleness of knitted garments by making seams. She recommended knitting in the round as much as possible and using kitchener stitch for sholder and other seams.
The instructions seemed quite simple -- knit to the middle of the hood, and then fold or lay the two shoulder pieces so that the wrong sides were together and both needles pointing to the right (or dominant knitting hand).
Using the long tail if folding or a threaded needle, start by preparing. You prepare knitted stitches by inserting the needle thru the first stitch as if to purl if it is a knit stitch and as if to knit if the it is a purl stitch. Remember -- prepare by passing the needle as if to make the opposite stitch. After thread is pulled thru first stitch on the front piece of work and then thru the first stitch on the back piece of work, you head back to the front piece.
Now pass the threaded needle thru the first stitch as if to knit and slip it off. Continuing to work on the front piece, prepare the next stitch as if to purl, and leave it on the needle. Now going to the back piece, purl off the stitch, remove it from the needle, and prepare the next stitch as if purling. Continue alternating from front piece to back piece.
if the knitted fabric is worked in pattern, you simply prepare by doing the opposite or what "what you see" -- if you see a knit stitch, you pass the threaded needle as if to purl and vice versa for a purl stitch. To complete the stitch, you pass the threaded needle thru as if you were going to use a knitting needle and then immediately prepare the following stitch on the same needle.