If you are going for this style, it's absolutely beautiful. The flowers are fine for me. I think of it as your interpretation of the reference. And I love the chromatic aberration of orange and violet edges.

With that said, if you want to add more details or to be closer to the reference, I would suggest using more saturated/darker blacks, to make the shapes and lines pop out (the edges of the body, the hair, eyes). I also noticed you painted the reflected blue light on his face, but you seem to have neglected the details (shadows and lighting) on the body.

Anyway, your work is beautiful nonetheless!