How to save a character in Pixton?

Could you please explain the process of saving a character in Pixton in a step-by-step manner? I'm having trouble understanding the exact sequence of actions I need to take. Perhaps you could start by outlining the initial steps, such as accessing the character editor, and then move on to detailing the specific actions I need to perform to ensure the character is successfully saved. I'm particularly interested in knowing if there are any common pitfalls or mistakes I should avoid during this process. Thank you in advance for your help.