Nom de Plume, pseudonym, pen name, whichever term you prefer to use, several writers have used one instead of their real names. Like fictional characters, a pen name in itself is a persona created in the writer’s imagination.
Your real name can in essence become a pen name, or what I like to call a “writer’s name” where nothing is made up (otherwise it’s a pen name). There are many options beyond your first and last names. You can include your middle initial, go with your full name, or use initials. If you prefer your middle name, you can use it alone or also include your first initial. If you go by a nickname, have a suffix, more than one middle name, and/or a maiden name, you have even more possibilities. Try saying them out loud, so you can hear how they sound.
There are many sources from which you can create a pen name. You can of course use part of your real name. You could pay tribute to relatives, friends or other people, places real or fictional, something special to you, or maybe it could be an anagram. Samuel Clemens came up with “Mark Twain” from working on the Mississippi River (from a phrase indicating the water to be two fathoms deep). Charles Lutwidge Dodgson took the Latin versions of his first and middle names, anglicized the spellings and swapped them to create “Lewis Carroll”. It could even be one name. Charles Dickens initially used the pseudonym “Boz”.
Usually, a pseudonym is used if a writer feels that he or she has a specific need for one. Some sought to distinguish themselves from someone well-known with a similar name. Others wanted to reflect their chosen genre. It can become a character within the story, like Daniel Handler and William Goldman did respectively with “Lemony Snicket” and “S. Morgenstern”. A writer with multiple works coming out simultaneously might publish some under a pen name and the rest under their real one, which Stephen King did for a while with “Richard Bachman”. If you simply desire privacy, probably your best option then would be something that doesn’t stand out, and even better, isn’t an obvious tribute to anyone or anything special to you.
Perhaps one of the most frequent historical cases has been female authors using male or gender-neutral pseudonyms to give their work a higher chance of success. Some continue to be used, like “George Eliot” (real name Mary Ann Evans). Others no longer are. The novels of Charlotte, Emily, and Anne Brontë appear today under their real names. However, the sisters first published them respectively as “Currer, Ellis, and Acton Bell”. Sadly, this trend still seems to continue. Joanne Rowling’s publisher apparently did not feel the target audience for Harry Potter (teenage boys) would be inclined to read books written by a woman. Rowling subsequently came up with “J. K. Rowling”, when in fact she does not have a middle name (she chose K in honor of her grandmother, Kathleen).
Often, writers become better known by their pen names. A friend who’s a teacher told me of a time when he asked his students if any of them knew who Theodor Geisel was, and no one could answer him. Had he used Geisel’s most frequent pen name (Geisel did use more than one, which you can certainly do), “Dr. Seuss”, they could have answered him right away.
At times I’ve thought about using a pen name. I came up with several possibilities (much like Eric Blair did before he settled on “George Orwell”). I also thought about how my own name could be written in various ways. In the end, I settled for my first and last name, which suits me fine. It’s unlikely, but not impossible, that I might still use a pseudonym for something someday. Whether you use your name or a nom de plume is entirely your choice. If you haven’t decided yet, try not to take too long. Always remember, your creative work is your first and foremost concern.