My curtain rods were always jumping off too, until I simply squeezed the brackets, with nothing more than my fingers, so that they grip the rods tighter. Annoying problem eliminated.

The first time I made new curtains for my Scamp I duplicated the originals, except for using a different material. I found that while I appreciated the different colors, the same problems persisted: hard to slide on those rods, and what with all the excess material they tended to balloon out across the (small) windows. When I want the curtains open it's because I want LIGHT. Light in the Scamp, to allow all the art in there (I commissioned rosemaled cabinet doors) to show in their full glory. Curtains that flare out over the window panes, ugh.

So when I made my present curtains I used high quality linen that hangs beautifully, and I lined them. My interior theme is Norwegian folk, and the linen was bought in Norway and brought over here, so the cost per yard was high, like $42/yard. Ouch. Every inch counts. But I also really wanted the print to show, which it wouldn't when bunched up. I decided to use a 1 to 1.25 ratio for each window, 1 being the width of the window, and 1.25 the width of the combined finished panels. I also chose not to use a sleeve (or pocket) to run the panels along the rod (bunches the fabric awkwardly), but instead I hand sewed plastic rings (impervious to humidity changes) to the panels at set intervals. This way I could get the effect of pleats instead of gathers. 

What I would change if I were to tear these curtains down and reconstruct them would be to use a mid-to-heavy interfacing at the top, and make the headers at least 3" tall, to help the pleats stay strong and even as they descend from the rod.

Just my experience and rationale for choices on the curtain project. It's an important one, for those of us who love our interiors, when we have to be in them, as much as we love being outside them. 

I've posted about my Scamp glamping before and won't belabor this with photos. It's late at night and I don't feel like fishing out/uploading/you get it. If you wanna see, PM me. Happy to share at a more energetic moment!!!