I wouldn't do that if I were you. You should follow the guidelines and that's important, so other people can't guess it easily.
I'm making my first password, and I think I will do my first and last name.
Some of the guidelines are they should not contain any personal information, and should have 8 to 10 mix of letters, numbers and special characters.
With those guidelines i guess i'm going to do 1TOmmme!
Also make sure you keep your password to yourself.
Because other people can go on your account and do bad things. For example post images you wouldn't want to be posted and tell other people stuff they won't want to hear. If you see someone do that tell an adult right away. Even if you trust that person don't tell them your password, because you never know and you can't be to sure.
Thank you for telling me all this important information.