Fair do's, but shooting practice (unless it's from a dead ball situation) is pretty much fruitless for a professional footballer. Every goalscoring oppurtunity is fluid, dependant on what's going on around you. It's how you deal with the fluidity and how good you are at composing yourself that matters. It's nothing like playing snooker or golf, whereby the ball you're striking is at a dead stop and nothing else is moving around at the same time. Hence why Sterling skied a ball when closer to the goal, yet scored a sweet shot further out.