Video clip made with Shotcut but with animation from Blender


I don’t know if this is the right category.
I am sharing a newly release video made by me and my wife with the intent to learn how to incorporate Blender animation into video making with “karaoke”. I would appreciate some feedback how I could improve making this kind of video … should they be people out there also has similar interest.
My main interest is to use Blender more on animations with graphics to add on to video clips like this … to be more enjoyable/entertaining.