DIY Whitening toothpaste Coconut Oil & Baking Soda

In this video I try DIY toothpaste for the first time with my friend. She gives her honest view on this DIY and we demonstrate how to do it. What are your thoughts on this? Would you add anything to this trio DIY?
Here is the link that shows Baking soda is less abrasive than whitening toothpaste:

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