I was trying out my new hanging system to photograph this quilt. It's needs a bit of improvement, but at least I know where I'm going with this. I got a friend of mine to buy a curtain wire from IKEA. It is similar to a photo wire, which is what I really wanted. The curtain wire is meant to be stretched between opposing walls, and should be completely taut. Since I needed a shorter piece of wire to stretch above a sliding door, however, I couldn't get the wire taut enough, because the wall fastening bits had to be bent at a 90 degree angle. A photo wire has different wall fastenings which allows for tautening even if it is stretched accross a shorter stretch of wall, so I'll have to look for one of those.
The wire is placed at the top of the wall and therefore rather discreet so it can hang there permanently. There are little clips to use for attatching the quilt and let it hang straight down. If I push the sofa away, I get enough space to take a picture of the whole quilt. As you can see, it sags a bit, but with the right wall fastenings I think I can make this work and make it easier to photograph quilts in winter (or when it's raining during the summer, which seems tobe most of the time...), when I have to do it indoors.