Original sentence
People looks vary a lot: fair or dark, short or tall - it takes all sorts to make the world!
Corrections
1) Subject-verb agreement: People look (not looks). 2) Verb tense/usage: look is present tense; vary a lot is okay, but we can also say vary a lot without changing meaning. 3) Dash usage: use an em dash (—) or a comma; the dash shown is fine but an en dash or em dash reads more cleanly in writing.
Corrected sentence
People look a lot different: fair or dark, short or tall — it takes all sorts to make the world!
Nice, kid-friendly version
- Original idea: People can be different in many ways.
- Grammatically clean version: People look a lot different—fair or dark, short or tall. It takes all kinds of people to make the world.