Absolutely gorgeous and beautifully lit. If I had a nitpick, and minor at that, it feels almost like the bottle is "choking" the iris - somehow I expect to see at least a little of that long, slender stem.
I really like the lighting; the flower petals nearly glow. I find the shape slightly awkward though; the bottle itself has a very strong shape, which is interrupted somewhat abruptly by the flower petal on the left. That results in a feeling of the bottle being lopsided. If I saw the entire bottle shape, or it was equally interrupted on the right, it'd be a more comfortable picture. The red glow is unusual, and I can't quite figure out what it was meant to be. The overall bottle and flower lighting is excellent though.