I did comment only because I liked your job and thought that it could be easilly improved by adding a couple of sweat stains, which would certainly add a little bit of realism to the picture. As he has drops of sweat in several parts of his face, it would be more logical to see some other signs of tireness or being hot.
Yeah, you're right, it is clearly obvious that my Italian is not actually fluent, but at least I'm not rude. If someone sepends the time enough not only to look at your work and think about the way you could improve it, and then, just to make it easier for you to understand the comment, tries to do it in your own language, maybe that person should recieve from you something more than a mean comment about his/her Italian. Call me crazy, but it is just something about good manners.