Welcome to Garage Glamour. You're about to meet some mighty fine people here--all with opinions.
#1 Since you asked for it, I've got a nit pick here in addition to the tips Barb and the others pointed out. The clasp to her neclace is a distraction that's often overlooked by many models and photographers. Keep an eye out for them because they appear when you least expect it.
#2. Try desaturating the outfit to a point that it becomes part of the image instead of the main focus. By all means keep the colors, but tone them down a bit. Even blondes need to be seperated from the background so yoiu might try rim lighting her from back/side or use a hair light at a minimum.
Okay. I went easy on you, but others may not. Welcome to Garage Glamour!!!