There is no right way to build a character sheet, but if you are struggling to get started check out this outline.
Name/Nicknames/Alias: What is the name of your character and what other names do they go by?
Age or Date of Birth: How old are they?
Sex/Gender: If they have one or identify in a particular way.
Pronouns: he/she/they or other?
Nationality/Birthplace: Was your character born in a specific fictional or non-fictional location?
Weight: Approximate weight. Is this below average, average, or above average for their class?
Height: How tall or short are they. How does it compare to other characters of the same class?
Body Type/Build: Is your character muscular, skinny, agile, etc.
Class: Are they a character from a certain video game or tabletop campaign that specifies a class or race? A few examples include:
Eye color: This is probably self-explanatory.
Hair Style: Long, curly, pony tails, spiked?
Intelligence or IQ: Often expressed on a scale of 1 to 100, with 100 being the smartest, or as a simple IQ score. Could also be stated in qualitative terms – “dumb,” “average”, “above average,” “intelligent,” “highly intelligent,” “genius”, etc.
Wisdom/Charisma: Similar to intelligence, but has different meanings in different games. Often used when building D&D or other tabletop characters.
Strengths: What are they good at?
Weaknesses: What are they bad at?
Talents: Does your character posses any specific or hidden talents that make them unique?
Bad Habits: Do they have any bad habits or are they relatively disciplined? Do they leave dishes in the sink, burp loudly in public, or something else?
Pets: Do they have any pets? What are their names and what type of animal are they?
Other Traits and Creator Notes: Is there anything else you would like to add?