Here are some thoughts about some photographs that captured my attention.
Chappers - I really think the idea behind your flower on the stump photograph is great, but the flower is just slightly off from the center and it just feels wrong I guess. If it was cropped slightly of center I think it might look better. BTW, I do like the stunt plane images.
deep diver - Your cropped image is much better than the original, but I think it would look even better if cropped with the center of the flower on the lower left spot of the number five on a die (if you understand what I am saying). I don't think the lighting looks fake on the second image.
tompon1923 - I love your image. My only thought is it might look better if it had a little more sky above. My eyes want to look and see what on the horizon but nothing is there.
TH3D4RKKN1GH7 - As others have said the white cord and the hair are distracting, otherwise it is a great photograph. I love the thoughtful expression. Your second photo is good but it could be better IMHO. My eye wonders all over the frame because his hair is so dark and there is alot of darkness in the background that I have a hard time finding a division line.
John