just be polite and subtle when giving your personal opinions .....
Instead of 'this pic sucks' .... you can always say things like 'very cute/hot/sizzling model' (in-between-the-lines.... 'the photography needs improvement and Thank God for the model who "saved" the image') ...... but then, jokes aside..... who learns anything from comments like this...? I was guilty of senseless comments like this in the past and even sometimes nowadays ... learning how to correct myself too .
I have quoted this elswhere in the forum but thought I'd share it here again .... from PM member Brian's rant a few years back
"People say 'beautiful', but it's not because the photograph is well-executed or has any creative or artistic value but because the subject itself is beautiful.
In otherwords, take a snapshot of any sunset anywhere in the world and no one will say 'this is such crap' because sunsets are beautiful. If a person is even slightly technically competent or is using a camera in 'P' mode then this kind of picture is simple to get and doesn't hurt the photogs face to show friends or post for critique (unless there are honest *ssh*les like Ted & I around ).
The real danger is that the photographer will actually belive that the photograph itself is beautiful, not the subject. Then he/she will cease the learning process...and spend the rest of their lives in the safe 'zone' that they've established churning out nothing but crappy images of beautiful subjects.
The ones that know the difference between a beautifully executed photograph and a beautiful subject are the ones that excel"
so yes, do critique for both your learning and share your points of views with others..... and if an image does not work for you despite everyone else singing praises.... state it.... and state why....
.......saying it diplomatically and constructively helps ............
p/s because its only your view.... your suggestion..... it cannot and MUST not be imposed (Eg 'you MUST xxxx and xxxxx or die die have to xxxxx')
good luck all !