Video tutorial for Russian Grafting to close the shoulder seams:
Please keep in mind that yarn substitutions may create a different result in the way the sleeve lays in the finished sweater. Because every knitter is different, you may need to pick up fewer stitches around the sleeve opening or work the ribbing more tightly (or looser – per your knitting style) to get the correct fit. The sleeve ribbing should draw the sleeve inward slightly and not waffle or look frilly. In the recommended yarn and with my knitting style, picking up nearly every stitch and working the ribbing tightly worked beautifully to get this result. You may find that you will need to make adjustments per your style and yarn to achieve the same.