It does, once you have the character sheet, you put these together in blender and use them as reference for the 3d model, so everything comes out in proportion and its just grind really to place the vertices.
The rigging + animation is done by mixamo's AI so just touch up after.
He had to do a UV unwrap and then align the textures to this, this is time consuming just because it requires thinking about where to split the 3d model, to place the seams, then to fit it all in a texture, where you have to think about how much space to give each texture (more space = more quality). And then map the texture into this space too. This is a known pain in the 3d modelling for decades and no doubt AI will solve this in the next decade.
The rigging + animation is done by mixamo's AI so just touch up after.
He had to do a UV unwrap and then align the textures to this, this is time consuming just because it requires thinking about where to split the 3d model, to place the seams, then to fit it all in a texture, where you have to think about how much space to give each texture (more space = more quality). And then map the texture into this space too. This is a known pain in the 3d modelling for decades and no doubt AI will solve this in the next decade.