Shawl Collared Vest

[speakout]

I made a shawl collared vest. The last thing I need to do is attach the shawl collar and I have no idea on how to do that! I've just started knitting again after 25 years.

I cannot put in a link due to being new, but if you Google "Shawl Collared Vest Pattern by Kathy Perry" it will show up in Ravelry.

Could someone help me on the correct way to attach the collar? Should the seam be o