Transitioning from knitting in the round to knitting flat

I started a sweater years ago, a year or two after I learned how to knit. I found a picture of it on ravelry:

http://www.ravelry.com/projects/momone92/evergreen-aran-woman

I got pretty close to being finished but lost track of where I was and since then my tension is a lot looser. I picked it up recently, decided to frog the whole thing, and wanting to avoid seams as much as possible, have begun to knit it in the round.

I am rows away from knitting it flat; I am wondering, should I just cast on one stitch on each side of the front and back for the seams for attaching the sleeves?

Any advice for transitioning from knitting in the round to knitting flat? I am hoping I will be able keep my tension about the same as when I was knitting it in the round.

Gorgeous sweater.
You’ve got it. Add an extra stitch at each side for the seam. For the knitting itself, you’ll be converting the sts on every other row because you won’t be knitting around the outside but turning and knitting back and forth. So on the back side rows, the knit sts become purls and the purls become knits. On these rows the pattern is reversed as well.
Good luck with this. I’m looking forward to seeing the sweater and good for you for getting back to it!

That’s a lovely sweater. I’m glad you’re going to go ahead with it too. I have a sweater that I’ve had OTN for over a year and I hope I can either match the gauge with the needles I was using or by switching sizes. I’m knitting looser too.