Animators call it anticipation: the little crouch before the jump. Big moves usually need a wind-up too.

A character who jumps with no crouch looks wrong, because the audience needs the preparation to believe the leap. The same holds away from a screen. Big changes that seem to arrive out of nowhere usually had a quiet run up: the saved money, the practice nobody saw, the conversations beforehand. Skipping the wind up does not make the move braver, it makes it less likely to land.

Pick the big thing you want and work out what the crouch looks like for it. Spend the next two weeks on that part rather than on the jump. Nobody has to see this bit, which is exactly why it gets skipped.