Labor intensive, with hundreds of C7/C9 clips, screwed individually with self-tapping screws to an 8' section of drywall corner bead... but I liked the effect. Easy to screw up and down to the wood fascia. (I'm so particular about everything in a straight line; wish I could help it but I can't!)
I wish I still had those C9 strings and could refit them with LED Retros :-(
Good Luck,
John