You do NOT have to follow the exact format below.  But this is the information I am looking for in a CS at a minimum.

No animated gifs.  Hide large pics in spoilers.  Make sure the face is visible, not some vague image.

(Image - good clean photo so people have a good idea what you look like)

Name
Gender
Age
Date of Birth:
Ethnicity:
Hair: 
Eyes: 
Height: 
Weight and/or Build: 
Other Features:  (Tattoos / scars / accents / style of hair, clothes (remember, no barbers around.)

Personality
Before and After if you need to distinguish.

Background
I am looking on information about both family and education, as well as where the character has lived in past years up to the Plague.  Note:  Younger siblings may survive the Plague along with you, but they must share the same parents (ie not step or foster family).  How long your parents lasted once infected will depend on their health prior to the Plague. 

Since the Plague
Your background since the Plague hit.

Other stuff
Transportation
Gear