I finished the border with plain treble crochet (US double crochet). I don't like to make the border too fancy with this pattern and I believe that the plain look suits it best.
I am not making another midwife blanket in bright orange. Mainly because I have four balls of it left over from the temperature blanket I made last year. Although I think it is a little too wide so I may frog it later today and make it smaller.