by, Helen Sedwick on Jane Friedman’s site:
Choosing a pseudonym can be as daunting as naming a character, especially since the character is you.
The simplest pen name would be a variation of your own name, such as a middle name, nickname, or initials.
Many authors change only their last name so they don’t have to remember what first name to use at conferences.
Once you decide on a list of possibilities, do the following.