One of the difficulties that are often encountered in the piano music are the quick movements, the jumps that we must do to reach distant keys from the position where you will find the hand.
Very often the jump is double, because writing is expected to reach a distant key and then go right back to the previous position.
There are many examples. Now I'm studying a transcription for piano of Mozart's famous Serenade for strings, "Eine kleine Nachtmusik". It is a beautiful transcription made by Ludwig Stark (1831-1884), the author of the famous Method "Lebert und Stark". Here's an example:
To study well these passages necessary to fix well with the eye of the target position and then execute the move at lightning speed: as exercise is useful to make the move in sudden way and then stop in front of the key or keys to arrival.
It's 'evident that the glance is very important, as well as the speed of movement of the arm.
Here is another example taken from the same piece; as you see, teaching graphic helps to focus attention on the single pass:
With a short video I explain the mechanism: