I once conducted an experiment about 2 years ago on a forum. It might have been here or DT.
The experiments was as followed:
I posted a perfectly accepted image, one that was perfect in my opinion, and already accepted on
all the stock sites I submitted it to. This is the image below;
I said it had been rejected in my post to all sites I submitted to. ( I lied)
I asked for people to tell me what was wrong with it. The reactions from people ranged every where
from
"Just resubmit again in a week" ..... to "You have no sense of composition" and this and that.
My point is if you post an image for people to critique they will always find something wrong.
Don't expect accurate results, don't believe it's a learning process.
The MIZ