I'd be interested too, so I'll watch this
I am lucky though - my dad has copyright as photographer on a lot of images and I have been given permission 'to use as if they were mine', as well as having some of my stuff on his website too, and flogging it to the models, lol. So perhaps a photographer might also be a place to try? Someone who doesn't necessarily want retouches or only ever does the absolute basics in post-editing, but will let you use some too? Someone doing TFP for models might not be so worried about what you do.
models on the other hand might be bound by said photographers, and retouching their images, received via the model, might make the photographer grumpy (heard this story from a photographer on a shoot I was make up for recently - this scenario had the model doing it).
Or, do as I do, and make friends with a model who thinks you're a genius, and take the pics yourself? lol Ok, the friendship isn't quite based on that, lol.
I bought a basic range 5mp camera recently, and am using that to get some pics I can play with, and have total and complete control over. But I would also like to have a bigger range than the one model at my disposal, and my dads photo technique.
Another place to look might be on model/photographer sites where you might be able to put the call out for images in a forum like this.