I took a rubber roller from a printer and glued it onto the screws,so that the book or IPad doesn't scratch. (You could use heat shrink tubing, or Vinyl tubing to cover up the screws.)
Step 1: What You Need
1. Hot glue gun
2. 2 printer rollers(or any tubing that will fit over your screws.)
Step 2: Glueing on the Rollers
Step 3: Done
When you are finished it should look something like this.