Answer: You will have to do this on your own, but here:
The title needs to relate to what you are selling or just relate it to what you are talking about.
The script needs to be planned, and it needs to make sense. You need to know what you are talking about. Stay with the script and be confident with it.
The sound effects that could be used for intrest could be, clapping, or subtle clicks!
If you are trying to add images for intrest, remember to add things related to what you are selling. Don't overwhelm the person with pictures and things.
You need a interesting hook, so remember to make it, pleasent.
For the last thing, use a wide range of vocabulary. Use good words!
I really hope this helped you! (sorry if I got it all wrong!)