To have a voiceover, I'd have to pay someone to do it. Read my last comment on budget- until someone coughs up the money to commission me to do that- it remains simple!
Yes, it's nice even though as stated above it looks like some sort of templates you randomly took, i don't feel any coherence in it.
Also, this is a video not an article, you should take advantage of that by using the sound and talk instead of using text. It's so much more pleasant and easier to follow.