THe flash level might be a bit high for some peoples' taste...but it's not horribly objectionable to me. Shots 2,5,and 6 all fill up the frame with her. She's got a very physcially fit, alluring body shape, and you've used that to your advantage in shots 2 and 5 and 6. Her expressions seem just a wee bit uncomfortable, but she could probably do better in subsequent shoots. Your color rendering looks pretty good on the fleshtones, trees, and greenery. In shot 4, the flash-illuminated parts of the shot look a bit too "cool" for that natural sunset backdrop. I would be very tempted to put a weak orange filter gel over the front of the flash's Fresnel lens when shooting that close to sunset. I would most definitely work with this subject again!