Hi Christina,
There are some good elements in these, but there are a few things you could work on, some of which heip has mentioned already.
#1, when shooting outdoor portraits, and the background is bright and busy, be careful to use shallow depth of field. This will keep the background blurred and give nice focus to your subject. Also, when the background is this bright, its best to expose for the foreground, or use some sort of fill light on your subject to bring in some light. A fill flash or reflector will work. Lastly, be careful of how your subject poses. I didnt think this was a particularly masculine pose.
#2, Again, the subject is too dark. This one could also benefit from a vertical crop, not a horizontal crop with the subject in the dead center.
#3, This one is better lit, but the lighting is flat. Again, it would look better with shallow depth of field. Also, a little bit of post processing on the skin would be good to clean up the blemishes/bumps on her leg.
#4 and #5, again, shallow depth of field will help separate your subjects from the background, so they dont blend in so much. Not sure about the brown/red tint either. It makes them blend in with the background even more.
#6, out of focus.
#7, This one could benefit from a vertical crop and some sharpening. The hard sunlight on her face is also distracting.
#8, As heip said, subjects that are this far apart dont usually work too well.
#9, This is the best one IMO. But again, it needs shallow depth of field, and the hard sunlight on the skin is distracting.
Keep shooting.
