Quote - when would a model become my own? 

 

As Dr. Geep said, the only way a model will ever be your own to sell/distribute or put your name on, is if you created it from the ground up from nothing.  Hacking up an existing model and making changes isn't creating, it's reworking and is considered a derivative.  There are copyright laws that cover "derivatives", however, they are vague and the end decision ultimately lays in the hands of the Judge in a court of law.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi