AI generated fetish images

and used masking around the mouth area

How did you do that?

I'm still using InvokeAI, which was a bit slow out of the gate, but has made a lot of progress with its UI and quality of life changes. Highly recommended. It also comes with a one-click installer basically, which lowers the entry bar even more (the main basic prerequisite is a Python install if I remember correctly, but the installation guide is concise and comprehensive).

Starting with v2.4, they introduced their "unified canvas" as part of the WebUI. Check their Youtube channel for an introduction of its main features, tools and terminologies, can't explain all of them here.

One of which is masking. Using the mask brush, you just paint over the area you want to replace.
So you pick an image, upload it to the unified canvas, switch to the appropriate model (in this case, the Bondage model), set the bounding box to the area you want to edit, switch to the mask tool and mark the inpainting area.
Put in a text prompt, "red ballgag with leather straps, drool" and hit Invoke. Everything "masked" will be replaced, the rest will not be touched.

You will need to fiddle with the Image strength slider - the lower, the more it will try to preserve the original image data underneath, if you go to high, the seams will become very obvious and the new parts will not blend in nicely.
Somewhere between .4 and .6 is the sweet spot usually.

If the results are unsatisfactory, you can also switch to the base layer mode and paint the gag in very broad strokes with the paint tool to jumpstart the AI on what should go where.

Next time I do an edit, I will try to remember to make a screen recording of the process.

 

That's Emily Marilyn IMO https://www.likera.com/blog/wp/archives/3198

I can see the resemblance to Emily Marilyn, but my money is on Sarah Brooke.