Better than your earlier post with the two lightbulbs. Again, the first two would be better if not shooting up on the model. Also on #1, the pose has created a crease in the skin on the left side. Also model blends into the background on this one and there is no catchlight. #2 is shooting up again, and the eyes are too shadowed. Needed a reflector to fill in there. Her black hair blends right into the tree. #3 gets a nice bonus from the sun so it has a nice hairlight effect. But the pose makes her mid-drift look a bit heavy. A reflector on the left would have helped to even out the lighting ratio.
Here is a 10D example of an outdoor shot:
It is shooting up a bit on the model, but I had here tilt here head slightly down to offset the angle. A tiny bit lower would have been even better. Also on these glamour type portraits it helps to use DOF to your advantage so that the subject becomes the main focus.