Critical and negative aren't the same thing
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Traditionally you either want a distance change (Lens to subject) or an angle (perspective) change every 3-6 seconds.
It is unfortunate they wouldn't allow a re-shoot because they only one they are hurting is themselves ^^
Usually any video shoot will have many re-shoots if using a single cameraman to provide the variety needed. If you have no formal training/education though it isn't bad and pretty commendable you are out there learning on your own.