Marcio this is just my opinion and how I see your photo.
When I look at an artistic photo may it be nude or semi nude.
I look first at the face of the model. To see her/his expression
What that pose would evoke would depend on the expression of the models face.
But in your photo, you have covered your face, and hair and I mean hair overcame the whole photo.
Please forgive me, but whatever medium we use as an artist, what we create or photograph should translate something to the viewer.
It should move the viewer. And on this case all I see is an emotionless shot of a man with a piece of cloth.As if the model was just coming out of the bathroom.
Again this is just my honest opinion Marcio. But the image is still safe and still not on the pornographic.