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A couple of little things for you.
In 1 I would have posed him on the steps behind him and shoot into the darkness behind him. i bet you would have got some beautiful light, as is that bright sun on the right of the image is taking me away from him.
As Jim said I would have liked to see his leg in 2.
3 is cool but that sunburst is very distracting.
In 4 was it possible to have him either side of that empty sky behind him?, I know it's not possible sometimes but it's really competing with him again. shooting like that isn't easy. I would have used some fill flash off camera here.
5 is a shot I do with little kids shooting down on them it's a cool shot, but not for adults for me.
Hope to see more from you.