Newspaper layout: Captions

Just looking at various ways of including the captions to my newspaper design. I initially thought that I wanted them to be like actual captions you would find in the newspaper so would be relatively small underneath each image. Then I tried a few different size fonts and placing in different places. Still no clearer as to whats the best course of action. 

 Font size 12 - My favourite one I think. Links closely to real newspaper print. 

Font size 12 - My favourite one I think. Links closely to real newspaper print. 

 Font size 14

Font size 14

 Font size 18 - More of a headline. Perhaps there should be a mixture..?

Font size 18 - More of a headline. Perhaps there should be a mixture..?

 Font size 12 but randomly placed rather than underneath image where it would be expected to sit. 

Font size 12 but randomly placed rather than underneath image where it would be expected to sit. 

Cover example_2.jpg
Cover example_1.jpg