For my final outcome, I want to create a useful guideline for designer to understand what's the wrong leading based on the type size. I limit the size only from 8pt to 11pt. This is because my intention is to make designer understand the the long body text (the potential and important one) should not exceed 11 pt.
However, this is a test print.. I'm gonna ask around if there are any of my friend could give me a feedback. Are is this useful for them, are they understand the point... and so on.