The 17 year-old signed a pro deal with the Reds last week.
Henderson told Liverpool's official website: "Harvey is in a very different stage of his development to Curtis [Jones], because of his age, but nonetheless the same lessons apply.
"His talent is frightening. But again, ability gets you so far and then mentality and attitude have to match it.
"We've seen Harvey grow as a player and a person during this campaign and what excites me most of all is that there is still so much more room for development.
"He gets that as well."