OK.....ideas are evolving here. Perhaps an arch of both "plaster" and Teak, Cypress, Redwood or another wood type frame/molding.
You will do best by going to Barnes and Noble, HD mag section, internet etc and just look for ideas. Either whole or elements that you put together. I fancy the idea of making each space in and out of a house unique in it's feel.
I found these images on a French Country cottage rental website:
http://www.historic-uk.com/EuropeanSelection/France/FrenchHolidayCottages-Provence.htm
There's lots more there.
