lol I did say without changing my name i was just wondering if you like changed the name of the head block it would stay that skin or if there is something like that
The only way for your head not to change is if you change your player name there is no alternative, however this may change in the future
I know a few people go to some people and buy heads from them with permission. But I'm not sure how often that happens.
You can, but if you change your skin later, the head's texture will change with it. Unless you changed your name before changing your skin.