Tried and True design advise

I’ve been listing for a few years and always pick up something useful and relevant for my home. These women provide tried and true design advise that isn’t too trendy but is still current and applicable. Their style is approachable yet expert. I trust their opinions, even when they disagree sometimes as both come to design with a good eye and years of experience.

My question is: I live in a single story stucco home with a brown bar tile roof in the Las Vegas area. I like a fresh traditional/transitional home with European influences. (English/French) Do you think I could get away with applied molding to the walls in the primary bedroom and sitting area? The walls are textured, would they have to be made smooth? I love this look but hesitate because the southwestern style of home that I live in may not work with such a traditional application. Please advise!!