Tee shirt neckline

To modify the neckline, I cut off 1/2 of the knitted band, starched the neckline, and then turned it under 1/2", right on the line where the band attaches to the body of the shirt.  Then I pinned it in place and sewed it down using a decorative stitch on my machine, from the outside.  The stitch is stretchy and also keeps the turned-under raw edge from unraveling!    

I used the same decorative stitch on the sleeves after shortening them.

I will post photos of another, of a lighter color, so it will be more visible.