For starters that pose just doesn't say delicate to me it says some other things but not delicate.
As others said your background is distracting go for a solid background or design the wallpaper there would have made a nice background but the door doesn't work with the wallpaper for a background.
You are a little off with the focus and it doesn't seem to be intentionally soft.
if you're going fo delicate, then have the model act delicate. this exudes a position of feminine power and seduction. focus is off or you forgot to sharpen for web viewing, need an even background, or one that adds to the message.
Interesting pose by the model. Good tight crop, maybe could be a little lower to include the thighs and elimate the empty space at top. Backgound is too busy and detracts from the subject.
This is not a super-attractive pose, although the model does appear to have a nice figure. Black bra + white shirt does not convey delicate. This shot is out of focus and the background is distracting. There is something in the lower left side of the frame that looks like it was not cropped out as you intended. Overall, the model is pretty but this shot looks more like a personal snapshot than an artistic interpretation of "delicate."
Your idea is good. Try to keep your subject in focus and maybe move the girl away from the door and against the white background to compose a better shot!