How does one go about making their own body into a texture for a model

like this one:

i’m wondering how to do that by taking my own pictures of a person. any tutorials or anything? i tried searching, but i can’t get the wording right for google to know what i’m looking for. :confused:

(Uv Unwrap - Skin Texturing - Texture bake)

one of the techniques

UV Unwrap

Then Bake