Can anyone help me add more information to this?

Changing a baby’s diaper can sometimes be very challenging. This manual will help glide you through the process after you practice, practice, and practice. Sometimes, even people with past-experience need a refresher course in relearning the tricks of the trade.
• How to change a diaper
• Use as a refresher course
• Hazards

It is a start to my intro. for my manual in this class. Please help.

Huh???

Is this supposed to be a manual about how to change a diaper?

Are the readers supposed to read the manual AFTER they've practiced?

A manual is designed to be read BEFORE the reader attempts the task.

And -- by the way -- at age 73, I don't need a refresher course in changing a baby's diaper. I learned it when I was 20 -- and certainly do not need a refresher course.