Ahh I find the outline much worse, but then the shading goes on forever so gets sore!
You know, when I looked at it, I thought it would look cool with green vinery and leaves and the flowers in black, interestingly! A darker green, not too bright, and perhaps the rose darkened with a bit more black and the others done similarly (unless the flash made the rose look greyer than it is) – I think that’s what I’d do anyway, I’m sure it’ll look great whatever you go for!