I'm using photoshop in this tutorial. And I assuming you are familiar with PS.
You'll need DDS plugin for PS from Nvidia. (in the Tools part)
And EA's Normal map extracted by Cmar. (Specular Normal Skin)
Get your DDS plugin installed. Open photoshop. Open my normal map.
The normal map of EA is saved in A8L8 format. So it will show like this.
We need to handle the Alpha and Luminosity channel together.
So, just change it to RGB form.
**Important!!! Regular normal map is in RGB format, R=X, G=Y, B=Z.
Alternative format is in A8L8, A=X and L=Y, Z is calculated by determined X and Y.***
So just copy the whole alpha channel to Red channel, replace the whole Blue channel with totally white.
It's correct. Don't try to change it otherwise you'll get inverted result in 3D.
Open EA's normal map in a new file and do this again and change the image size to 1024x1024.
Now you can import your skin texture to locate the nipple.
Here, I only leave the nipple and erase all other region of the skin texture.
Changed the opacity to low value so you can handle them clearly.
Becuase the RGB value around the nipple is almost the same.
And remove the previous nipple with EA's normal map.
You can simply cut the chest part and paste it in the same place.
And you have the correct nipple position.
Save your PSD so you can do this easier next time.
And we have to make an A8L8 format that can be used in game.
Leave the unwanted layer invisible and flatten the image.
Copy the whole Red channel to Alpha.
Then copy the whole Green channel to Red and Blue channel.
And save file as DDS, remember to leave the Alpha Channel checked.
Save in 8.8 AL 16 bpp | alpha/luminance
This is the A8L8 format.
And now you have the revised normal map.
And here's one for Navetsea's skin (Nipple position revised)
I only made one version, Nipple and Penis Map1+2 all included.
***Important!!! Since the angle around the chest part changed not so much (Workable with female), you can do this by just editing the texture. But this is not the traditional way though.***
***You'll need a 3D meshing software like blender to bake your own normal map.***
***DDS files saved in A8L8 won't lose their details***