It is very easy to get the stance, swing all spot on and still consistently not hit the spots.
A little 'secret' was told as a kid by my grandfather. Throw a dart, ball, toss a coin.
Eg if going to throw a ball to another person.. never throw it to them, pick a small point, say a button on their shirt and throw at that... forget the person.
Same , be it tee off or dropping onto a green in golf, never aim for a area of the fairway, or green, pick a small (exact) spot
Just before you throw swing/ cast, imagine the flight line of the ball...and it hitting your spot, clearly.
From that its just practice learning the arch, distance force you need to apply... and body stance stuff as described in posts above.
Its funny how we do it all right with a gun.. stance balance etc, and choose that tiny spot on the deer... then not do so with everything else.. even a dart board. We will aim at say the 3x 20, not a tinest of spots in the triple.