if he's getting practice, it should be on some plywood in his backyard or somewhere where few people will see. in his case though slopi still doesn't get the basics. and yes, control does come with practice, but if you have the idea of what a successful piece or throw should look like then it makes it a lot easier to produce something decent. and of course someone who's only drawn on paper can't just go out and pull a burner out of their ass, but if they've done their homework then i can guarantee you it'll look better than someone who doesn't have any idea what they're doing, and every time the people who have a solid foundation go out it will look better and better and they'll progress that much quicker.