You know what? That’s a great question from a beginner.
No one ever asks about what not to do.
My first answer would be when casting, don’t arc the rod. Keep the rod tip in a straight plain by starting the cast with the rod tip low. That way when you lift the rod and bring it back, the tip won’t dip behind you. And when you bring it forward, theoretically the tip should stop around the 10:00 position. But I have found, you can vary that a little.
IMO the single biggest mistake most new casters make is beginning the forward cast too soon. Don’t make the forward cast until the backcast is all but completely straightened out behind you. You don’t want to wait too long and let the backcast begin to drop, but it’s a far more common error to begin the forward cast while the line is still going back, which cancels a lot of your cast’s momentum.
Hope I explained that clearly – it’s easy to demonstrate, not so easy to put into words.