You need this to get it done:
Action DetailsRequirements and how-to articles for Snapchat's action:
The name you wish to be known by on Snapchat.
A unique username (you cannot change this later.)
A valid email address to be associated with your account.
Date of Birth
Your date of birth (month, day and year.)
Phone Number (optional)
A phone number is optional, but allows for extra account security (if you ever get locked out of your account, your phone number can be used to send you a password reset link via SMS.)