/ic/ - Artwork/Critique

Question from me to you guys.
Do you think what im doing with threads like these is ok?
My intent is to improve my own eye at discovering mistakes or stuff that could be improved on my own art by going through mountains of art you people provide
But I also believe that anyone can be critic and show artists that something is good or could be made different through a third person perspective
Tldr
These threads are fun, but is it useful what I'm doing?