To me, this looks like it could be the blossom of some kind of night-blooming cactus! It was kind of wild and crazy before I added the shading and the gold accents. The metallic shimmer added a lot of sophistication.
Zentangle drawn on Strathmore Vellum Bristol using a black, Micron pen. Shading done with graphite pencil.
Tangles: Chainlea Cobbles Festune Pais