Having ethos is having the characteristics of trustworthiness and credibility. If you display signs of ethos, you are trusted and people believe you.
Having pathos is showing emotion and value. You really express yourself, and know what's best.
Showing signs of Logos means that you have knowledge, reasoning, and proof. These could be shown through the use of percentages in charts, or with facts found in studies.
Credits:
Created with images by Nesster - "Noxzema Cream 1949"