Is the scarf in stockinette? I guess either way you can just line up the stitches so the edges are kind of folded in ( for a neat edge) and do it that way, sort of like seaming a garment.
Hi Niffer,
I was going to ask the same question as you! How’s this idea: place the pocket flat on the larger piece. Then use a contrasting colour to back-stitch (or maybe one of these: http://inaminuteago.com/stitchindex.html ) around the sides and bottom of the pocket, about 1-stitch in from the edges. (depends on the style you want)