Hi,
I'd recommend reading this page[0] which provides detailed information about the Ambassador Membership process. Also, it's mentioned here[1] that "A mentor will
NOT initiate contact with you. You MUST initiate contact with a mentor."
Should you feel ready to become an ambassador, pick a mentor from the
list (located in your region), then sent him/her an introduction e-mail asking to mentor you.
Take care and If you need anything else let us know!