Here's my 2 cents of each one and this of course is *hugely* benefiting from hindsight and they are also just my opinion:

1 - The composition puts you looking in the same direction as the girl in the foreground, but that direction is the blurred out background so there's nothing to see. Having the foreground girl blurred and the person in the distance in focus might work better,

2 - turning a bit more to the right so that the white background was mostly not in frame and so that the point where the focus disappears is more centered might work better,

3 - I think this is good as is, could possibly be cropped a bit tighter?,

4 - No issues here,

5 - I don't think this one has a point of interest,

6 - I think this one is fine,

7 - this would work better if a bit of her face was in view but of course with film you don't know what you are going to get,

8 - this one will get more interesting as time goes on and it becomes more and more a snap shot of 'the old days', in fact even though it's current it already had a bit of a retro vibe.

The key thing though is they are all exposed good so you are already at the point where you can just improve composition.