I think your video reviews are good considering you're just starting.
One thing I tell the students I mentor, which may or may not help you, is to take a post-it note, and make a couple bullet points of what you'd like to mention about the toy. You don't have to fully script it, per se, but just make some bullet points to keep you on topic and keep things shorter and to the point. Then, you can stick this post-it note off camera, but still within your view, so you'll be able to see it while you do your review.
Also, don't be afraid to take a couple takes of the video if you need to!
Once you have some more practise, you'll get better with time!