Thanks for getting back to me so quickly!
Do I have to do anything special when I sew it up? I did try this, but wasn't happy with it, so unpicked it, then unpicked other stitches by mistake, made a huge mess and had to unravel it! Is there a technique I should use, or is it just sewing with whip stitch?
Thanks for your advice (it's my first jumper, can you tell?)