Exercise: Object in different positions in the frame.

The weather wasn't great and the photos have a 'dull' feel and thats because it was a 'dull' day !
I found an open space and took the following photos to place my subject in different positions in the viewfinder.

The picture that I prefer is picture 2.  To have the object exactly central seems to harsh, picture 2 is slightly off centre which softens the look and it gives the subject and area to move into if he were walking. Then my order of preference after that would be, secondly, picture 1. Third, picture 3, with this picture although he is too high there is space to the left to move into. Fourth, picture 5. Lastly I least like picture four as the subject is tucked up high in the frame, with nowhere to move to and he seems to be floating aimlessly.

As I said I prefer the picture where the subject is slightly off centre, however there are times when I feel that having the subject completely central would be beneficial.  Having the object exactly in the middle could be very powerful.