For Jose's hairs, it was pretty simple.
As a base for all the hairs,I basically stole HF versions of Inky's hairs, the bun hair, and just edited the bun to make it larger and higher up (V1), edited the fringe so there's less, then I simply stole Cass's hair braid and readjusted it to what the concept art showed me.

For V2, I brought the braid close to the front and farther back for V3. Kept the same bangs as V1 and kept the OG bun size.

V3 is pretty similar to V2, as said above with the braid, but I also made the bun bigger since why not?

The outfit took a moment to figure out since, first, "How can I give her piercings and accessories while making it as compatible as possible?" and I figured that the easiest way to do it is just editing her outfit mesh. Sadly, this means it'll be incompatible with mods that change Jose's outfit (mesh), but I figured it still works out since ppl could still use their fav retexture mods! 

With that planned out, I got to start!

I stole Isabela's labret piercing (she won't mind) and used that as a base for Jose's as well as the earrings on her ears. I basically just copied it and made it larger for her earrings since that's my best interpretation from the concept art. I also used the same technique for her first forehead accessory. For V3's forehead accessory, I basically just stole that middle piece from Jose's livery collar. Overall, pretty simple.

For V2, I removed the scarf she usually has around her neck and tucked into her outfit. This was a bit tricky since it's all pretty much one part. So, I had to use the texture itself as a guide for what to remove. From there, I added an actual (HF) body.

Now, the reason this works for Josie is because she's got hands that use the body texture from the game, literally her hands link to the WHOLE body texture, which is very good in this case. If she didn't have this, I'd be in trouble since I would have had to add that skin texture to her basic clothing texture, which would have made all of this incompatible with texture mods. 

Once that was done, I just built from V1's earrings to make them dangly. Before anyone reading this asks, no, I can't add physics. DAI sadly just can't do that unless it's for skirts. Once the earrings were done, the forehead piece which is more circles in a flower shape with a stolen pearl piece from Jose's OG livery collar. From there, removed the middle section of the livery collar with a simpler one.

The very last things I did was simply make the white ruffles at her wrists gold, which I did by simply pointing the UV of said ruffles to the socks, cuz they're gold and have a pretty nice base texture without wrinkles, which the sleeves have thanks to the normals, and used that same UV trick to remove the gold slit on the back of her dress. She's not technically wearing a gold shirt anymore, so figured it could go.

V3, like I said above, I just stole the forehead jewellery from Josephine's OG livery collar, made it smaller, and added the labret from V1.

However, as you can probably see from the pics, the forehead jewellery sticks out. Unlike with V2's forehead jewellery, I can't get away with putting it really close to the hair since it could easily clip due to the middle livery's model thickness. It requested, I don't mind putting it closer to Jose's hair.

As you can probably read, V2 was BY FAR the hardest out of the 3 concept fits, but some would say it's the prettiest.

Also, for all the outfits, I've fixed that one weird spot on her outfit where the UV's were messed up. It's not very noticeable, but once you see it, you see it. No need to worry about it with this mod!  :)

I really didn't edit the complexion too much, imo.
For V1, I edited her moles to make it look closer to her first concept art and edited the normals so it looks natural. I also removed her freckles since, from what I can see, there aren't any freckles, tho I did add a light splattering of them over her nose. Her eyebrows were also cleaned up a bit!

For the pics with her V2 and V3 looks, I completely removed her moles from V1's complexion!

All of these complexions got their own 'No Neck Shadow' versions, which was very easy to make. I simply used my drawing program and tint matched her from her head complexion and simply used an airbrush where the shadows were on the texture. Went in game a couple of times to get it as close and natural looking as possible!

I also made all these versions for her OG complexion, as well!
Why?
Idk man I'm just a college student on her break fjghdkfj I got time on my hands.

Anyway, I did a simple edit of just her OG (and tweaked) complexion and one without moles, leaving only her freckles, for those that would want that version.

Quick thanks to honeywhite for giving source files on their Josephine Complexion Tweak mod so that these complexions didn't have that weird fracturing around the eyes.