You know, the advice for penalties in the omake isn't bad. If you aren't good enough to do top corner or right under the bar, the next best option is to go to one side or another on the ground and the most accurate way to do that is to do a strong but "polite" side-foot pass. And if you take too long to run up you give the keeper too long to think and you start second-guessing yourself. Unless you're playing high-class football with scouting and so on, you might as well go with your first instinct. So, don't bully turtles and don't be slow or you'll turn old.