Every monologue in every type of audition starts with an introduction. This should be all about WHO YOU ARE. Be yourself and relax. Deliver your introduction using these exact words and you'll have a successful audition. After you introduce yourself, take a breathe, exhale and become your character. 

Good TIME OF DAY
I am SAY YOUR NAME
and will play SAY THE CHARACTER'S NAME
from AUTHOR'S NAME (POSSESSIVE)
TITLE OF PLAY

Example

Good afternoon, 
I am Kelvin Moon
and will play Albus Potter
from J.K. Rowling's 
Harry Potter and the Cursed Child

Follow the link to a collection of monolog books to help with your audition preparation. ​Be aware, these books are for adults and have adult plays in them. There are many that are appropriate though.