Part one of reworking this thing. Gonna be a long ride.
This is why you NEVER draw a stencil from a picture of an existing tattoo, even if the client "wants the exact same thing" - the image will be distorted.
If they are determined to replicate the design (or in this case, I am reworking it to correction), you need to look for the original reference image used; using the TATTOO reference image is not good enough, not only because of distortions but also the artist that did the tattoo might have made some choices (changes/simplifications) that you would not. A lot of the widely-circulated images of existing tattoos that folks bring in are decent, but sourced from exactly one original picture that you can track down with a little work. With AI junk clogging things up, it took me a bit longer than it should have, but I did eventually find it:
THIS is what you need to make your stencil from. You can see quite a few differences in accuracy from this and the tattoo reference, including some weirdness in eyes that I would have definitely fixed... though, in my case, I'll just be using this photo as a reference to rework what I can into better anatomy.