Comments on works of art are always subjective. Take them with a grain of salt. In my experience if you get 1 comment that seems immature it probably is based solely on ignorance. Look at that persons gallery that left the comment, and decide from there wether it's worth giving it a thought. If that person doesn't have anything in thier gallery it's probably because it's not worth looking at. If you get the comment a few times then it's probably sound advice. In the end the only thing that matters is how you feel about the piece. Particularly if the comments are unsolicited. On the subject of wip's. I for one use the forums for wip's all the time. Not here neccesarily, but on other galleries. It's quite useful especially when you have a deadline on a commission piece. As far as wether using the wip as a tool takes away from it being called your own, I say absolutely not. The WIP's is a collaboration of advice given by other artists who share thier vision based on their own experience. It's up to to the individual to shape that vision into a reality, therefore making it your own. Look at it this way without teachers there would be no students...