At last the windows have curtains. I used the fabric from my actual curtains, the same stuff I used for the duvet cover.
The curtains are permanently open as it would have been too much of a challenge to have them drawn as well. So I used a simple running stitch to gather them at the top.
I made this little vase, for one of the flowers that appear throughout my bedroom, by rolling up a piece of sellotape and then gluing it directly to the window sill.