"Would you describe yourself to my mother and me?"
Here's why:
* "You" is the correct pronoun to use when addressing the person you're speaking to.
* "Describe yourself" is the correct phrasing for asking someone to explain themselves.
* "To my mother and me" is the correct prepositional phrase to use in this context. "Me" is used because it is the object of the preposition "to."
Let me know if you have any other questions!