Yes, I am.
Just spoke to British friend who lives nearby and he said that French plaster is really, really fast-setting, so even someone good at plastering (which he is) is likely to make a mess. A novice has no hope, especially on an ancient, dry as dust, crumbly wall. I feel a little better, though not that much when I glance at the cock-up I have made.
I am indeed looking at the rustic option. V tempted to go and get some rough-look, rustic paint that you slap on with a knife. Don't like it, though...
How are the corsets? Why is the cub wailing?