Good analogy - you practice away on a bugle getting all the tones and notes right for 6 months. When the day comes, someone hands you something sort of like it but its got three valves/buttons on top and about half a kilometre of extra brass tubing. You feel like Fats Navarro and have all sorts of inspiring ideas forming in your head, but its Freo Oval and you know you just ain't got the puff like Fats had. So you squawk out the last post as best you can and fist the ball over the boundary like the coach keeps telling you to do.