My 3 screens layers (from Alexander Elder)

In the book The New Trading for a Living, Alexander Elder describes an useful and mechanic way to analyze and filter opportunities for investing.

The 3 layers have a main purpose these are:

• Top screen = censorship purpose (this one is the TOP SCREEN)
  
• Intermediate screen = determine if there is an opportunity
  
• Bottom screen = refine the short
  
  

What do I check on each screen?

Any additional idea or better way to improve this one is welcomed.