It was very messy but went quite quickly when I was able to join the efforts. James insisted on taking a picture of me. We got some details from the wall-paper under the paint.
Here's proof that James did a lot of the work to clean up this wall.
The next step was to get it plastered to be nice and smooth. And to choose the color.
We went with the one on the right. And it looks awesome!
Now we get to do the other walls :)