I did want to show you how my swap mini looked finished though.
I added a line of grey stem stitch all around the piecing and then framed it with charcoal binding. I didn't want to take away from the rainbow by making a colourful binding.
I'm really happy with this finish, except for the fact that I failed to notice that I had used a piece of Snow instead of White on the red edge. I had proceeded too far to remove it when I realised. So annoyed with myself. I hope that my partner can look beyond this flaw.