We don't really have the greatest fit of forums for this kind of topic, but I believe the Creative Corner is where we ask people to post things of creativity and writing to:

https://forums.psychcentral.com/creative-corner/

Please make it explicit you would like feedback on your writing, if that's what your aiming for. Sometimes folks need to be reminded that it's okay to provide constructive feedback if the poster is asking for it.

Good luck!