Ok some comments on framing - just my opinions mind
1 - Works really well for me - offset sharp and crisp
2 - I like it - almost abstract!
3 - Heads a little low in the frame, like to see more space under the beak
4 - love it - central works!!
5 - again for me ducks a little low in the frame
6 - good - I like that one - is that a fishig line in the swans beak
7 - love the shot but again looks a little low in the frame - bit too much space above
8 - Nice shot - if were to change it I'd place the duck to the right looking into the picture rather than looking out as it appears to be now