Are you machine or hand quilting? FMQ or straight lines? How far apart does your your batting mandate?
What I would do-- free motion quilting of petal lines inside each blosom and veins inside the leaves, probably in a white or grey thread, to avoid innumerable thread changes. I'd either outline either side of the vine/stems or if I was feeling ambitious, I would do a very narrow wave inside the vines in a matched thread. IF I felt the batting called for it, I would do a gentle stipple on the background in white thread.