C&C per req:
1. A nice casual portrait. Consider your background and your settings, especially when shooting portraits out of doors. Using the tree as a backdrop, but putting more distance between it and the subject as well as using a large aperture would have rendered it more softly focused and much less distracting. As well, the "open" area immediately behind her head, image left is a bit distracting. I think her face would benefit form a minor levels/curves adjustment, and, judging from her shirt, a WB tweak.
2. Another pleasing, casual pose. This one is problematic because of the exposure; unfortunately your flash isn't strong enough to provide the needed fill lighting; consider different positions which will maximise the benefit of available light. As well, always remember to check the scene; the poplar tree growing out of the centre of her head is less than ideal. Lastly, understanding you're restricted in what you can do because of the nature of your camera, try and find softer, more even backgrounds, hedgerows, walls, etc which even if in reasonable focus will offer less distraction.
Overall, good job. There are a few minor issues, but nothing that can't easily be resolved. Keep practicing.
Just my $00.02 worth - your mileage may vary.
~John