Vahid,
I have checked out your other pictures and find many of them lovely, with beautiful light and shapes.
I still feel this shot is too blunt, and the light too hard, and that combined makes me feel that the woman is not a person, but an object. That's why it's so close to pornography, to me.
The pose is good, it tickles the mind for people who are attracted to women, but the angle and light "takes a wrong turn", in lack of better wording.
IMO there is a very fine line between erotic art and porn, and that line is in the mind of the beholder. Mine is probably drawn differently from yours or anyone else's. I do not consider porn to be dirt, though. Sex is not dirty. Porn to me is pragmatic more than artistic.
Anyway, I hope that this clarifies my standpoint, and of course that the first post did not offend you in all its bluntness...