When writing narration or dialogue for video scripts it's a good idea to read the lines aloud to make sure they will work when spoken. Lines that look swell on the page don't always sound right.
I sometimes read my print copy aloud, too. It's easy to spot sentences that are too tangled, too long or just plain ugly that way.
Like that last sentence, for example.
This reads better: "It's a sure way to spot sentences that are too tangled, too long or just plain ugly."