Don't we already have such a thread for general Tips? http://hypnohub.net/forum/show/2317

For more specific Feedback the comments of the picture in question is a better way to give feedback than to put it into a separate thread, where it might get overlooked.

If people are afraid to post they shouldn't be. Just post it and we will give our feedback so that v2 or v3 will be up to quality standards. No one is getting eaten alive just for not having a great first picture made.