Hi all, I've recently taught myself to knit from a beginners book. It's taken me a while, but I've finally finished the parts to my first jumper. I have the back, front, and two sleeves. The pattern now says "Using mattress stitch seam, join right shoulder seam. With right side facing and beginning at left side of neck, knit up 17 sts" Unfortunately, I have no idea what most of that means. Is there two different steps in there? What exactly does join right shoulder seam mean? Is it as obvious as it sounds. Sorry for the really dumb questions, but I'd hate for my arms to be on backward!
Thanks in advance for your help