I want to make a knitted top with buttons going from the neck 1/2 way down, there will be no front seam. I can't seem to find a pattern for this and not sure how to cut the open piece at the top.

I have a pattern that is similar to what I want but no buttons, just an open V that is cut on the fold and the opening is cut later using a facing to finish it off. Would I follow this pattern and cut a seperate tab to sew onto this open V for the buttons and button holes? Also, would you square the bottom of the V or leave it in a V?

Any chance someone could help with this?

Thank you!