Use the `def` keyword
Write the function name
Add parentheses `()`
Include parameters inside the parentheses if needed
End the function header with a colon `:`
Indent the function body
Use `return` to send a value back if needed
Call the function using its name followed by parentheses
Example: `def my_function():`
Example: `def add(a, b):`
Example: `return a + b`