I think a few people have created some tutorials from start to finish. One of the issues is that the tools such as blender 3d are constantly updated. Even the player files have small parameters that are added or changed in each iteration of 2K. To be honest I'm don't even know how to do certain things anymore, such as create the facial skin texture for a player in blender. This is because I upgraded to a recent version of blender and don't know where the old options are.
anyway have you seen these tutorials?