Step One: Notice a grumpy child who is very tired from playing in the water but won't take a nap. Introduce plant polishing. Take pictures for a blog post.
Step Two: Find a dusty jade; you know you have at least one. Put it on the floor. Get a dust cloth and sit on the floor next to said dusty plant. Wordlessly, start polishing.
Step Three: Show your child - who has taken a keen interest by this time - how to dust the plant. Step back and watch. Take some more pictures for your blog. Then share your wisdom, now that you know it worked.