Of course pockets in all knitting projects are optional and the original didn’t have any, but I have more or less dispensed with accurately recreating the sweater exactly (though this pattern could easily be done that way), I also love walking with my hands in my pockets, so mine will have some.
Work your sweater in garter stitch until you get to the part where pockets should be. I suggest trying it on (if you are anything at all like me this will be just the next in a succession in many tryings on) and figuring out where you want pockets.
At this point my sweater looks like this (click to see full size):
I am also adding a few stitches for hip shaping here, which is also optional and will depend on the body shape of the person who will wear it. I have already added 2 stitches in one row and will add 2 more a little later, this will add about 2 inches. I chose to do this staggered, so it wouldn’t suddenly bulge – I spend quite a bit of mental energy in clothing selection trying to make my hips not look like they bulge.
The next step is to figure out how wide you want your pockets. I figure I want mine about 6 inches (18cm) wide. Change the width of the pocket to align with the size of the sweater you are making and/or your preferences: smaller sweater = smaller pocket and vice versa.
The next step is to go back and work how wide each front side was. Then I suggest taking the number of stitches on each front side, subtracting the number of stitches to make your pocket the size you want, and dividing the remaining number by 2 and placing your pocket that many stitches from the edge.
Now you know how wide your pocket will be and where to put it, on the next right side row (so the garter pattern will work better) work as many stitches as will be the edge of your pocket, take as many stitches as make your pocket and put them on waste yarn or a stitch holder, CO as many stitches as will make your pocket (I suggest backward loop cast in this situation), work until you are the number of stitches between your pocket and the edge plus the number of stitches for your pocket and repeat the process with the holder and the cast on. Work to end, turn and work as usual.
I plan to work the pockets at the end with one strand of whatever yarn I have left so it will not be too bulky. I will K1, yarn over, K1, yarn over . . . , so the difference in gauge will not be such a problem, and in the next row I will knit through back loop, so there will not be holes from the yarn overs. I will post about this too, but I am outlining it now in case you want to change order of knitting or get ahead of me.
My two fronts are 19 sts each. My gauge is 7 sts /4 inches (10cm).
(6 inches (15cm) for each pocket) x (7 sts / 4 inches (10cm) gauge) = 10.5 sts (say 11 sts) for pocket
(19 sts / front) – (11 sts for pocket) = 8 sts / 2 = 4 sts from edge
Knitting of course is amenable to fudging and now I see that I don’t like the distance from the edge that my calculations came up with, so am am changing it to 6 sts from edge.
So I need to K6, put 11 sts on holder, CO11, K to 16 sts from end, put 11 sts on holder, CO11, work to end. In the next row I work in garter stitch as usual.
This is about what it should look like at this stage: