??... hi eminent try to find your own method..
Sketch is only a tool.. mi first model is textured using paint.. (yep)
i make texture first then i make the model and then i rigged (3steps).. the regular iso method is...
0.- Inpiration
1.- Concept art
2.- Blue print
3.- Model
4.- Uv The entire model
5.- Make base texture
6.- Make skin color texture
7.- Make bump map
8.- Make Emisive
9.- Make etc.. map
10.- Rigg model (custom or using the basic template -find in fpsc chat-) Export the txt limbs order (if you need glue other object to your model like weapons)
11.- Make your animation in custom model or import Bhv file
12.- Export and use..
(i do all steps in custom paid models for my clients..)
)