Here's a close up of the bun cover I made. I made it all up as I went along so I am going to have to remake it and write it down.
The only stitches are chains, trebles (UK) and Double Trebles (UK).
You will need a size 2mm steel hook, crochet cotton (I used milford) and a hair tie in the smaller range.
I will be collating the pattern over the next few days.