I just learned about this site today, despite having written transformation erotic for years. I have a Patreon these days instead of doing commissions, but I'm always hungry for feedback and a reader suggested this might be a good place to post stories in progress for feedback. I'm not sure what the etiquette is, though, and my fiction tends toward the long form (I'm finishing up a book-length bimbofication story at the moment). I expect to lurk a bit until I get my bearings.
All my complete work is available to everyone for free, and you'll find a complete story about a scientific accident turning a man into a hucow in an public post on my patreon page (under FrigOfFury), in the unlikely event that you're so curious about a random new user that you google me.