I concur with Jorge's post. If you take your work to a gallery that understands photography or have it critiqed by a well known photographer you will discover that there are certain conventions that apply. These include rules of composition, tonality of the print, cropping, lighting etc. A lot of technical aspects that are seen before the subject is discussed. That is because a gallery owner understands that certain flaws in technique distract from the viewer seeing the artists vision. Of course for every rule there is an established artist that can break them or create new conventions.
I think it is important to be open the criticism as a way to see how to improve our work. If someone has the knowledge to look at my work and point out ways to improve I am all for it. It can be only a couple of improvements that can make a mediocre image in to an outstanding one. i don't mind the extra help.