But even then only really after the Bachelor's level
I was creative on the computer before I even graduated primairy school. So I don't think you should start so late. I think it should increase gradually with age.
Start off very exact and get more creative when you progress.
It's the natural cycle. First you want to learn how stuff is ment to be used, then when you have enough experience, you know better and you chuck the rules.
You can't be creative with the shackles of the 'basic understanding'. You have to let it all go, Neo. Fear, doubt, and disbelief. Free your mind.