C&C per re
1. A neat idea; I like the sun flares off of the globes image right, but those left and foreground are rather dark and under-exposed. Additionally, the presence of the person in the background is somewhat distracting. A shooting position moved slightly left and zoomed a little more tightly would have improved this I think.
2. Very nice. I would have preferred to see this without the right-hand side of the tree being cropped, and I think positioning yourself or waiting 'til the sun was completely hidden by the tree would have improved it further.
3. Interesting, but a lot of unused space. The emtpy sky really contributes nothing to the image.
4. Another nice idea, but again, too tightly cropped. I would prefer to at least see her complete torso, including arms - cropping body parts is fine if necessary, but always try and do it boldly and never lonigtudally or at joints. Both this and #3 would have benefitted greatly from the use of a polarizing filter.
Lastly, STAND UP STRAIGHT!! All of your images have a distinct slant to them.
Just my $00.02 worth - your mileage may vary.
~John