Hi, I am a very new knitter and this is my first project besides something square. It is a toddlers sweater and the sleeves are set into the shoulders. My problem is how to sew them in. I knit the front , then the back and then I had to join up the shoulder seams now I have to sew in the sleeves but the stitches are not going the same way. I’m confused as to what stitch to use to knit it up. Help me please.