Once you've completed knitting the sleeves down to the cuffs, there's just a couple of steps left on your Granton!
For the button band, you'll pick up stitches up one front, around the neck, and down the other front. When picking up from the front pockets, make sure to pick up through both layers as one to close the edge. Then work the ribbed button band with one-row buttonholes. Block the sweater (opened up flat if you have the space) before seaming the sides.
Here's the seamed shoulder and picked-up sleeve:
Fold the sweater so the sleeves and body edges are aligned, and clip or pin the edges together, making sure everything is even. Then use mattress stitch to work the two long seams, from the sleeve cuff up to the underarm, then down the side. Make sure to stitch through both layers on the fronts, and leave the ribbing open at the bottom for the side vent.
Weave in all your ends and sew the buttons on, and you're done!
Save this tutorial for later on Pinterest!