Dear Arif,
To become an ambassador start from here first.
https://fedoraproject.org/wiki/Ambassadors_Join_start
The following link will help you to find mentors, there are 5 mentors
available now.
Hope there is none from your country but others will help you.
https://fedoraproject.org/wiki/Ambassadors_Join_choose_a_mentor
Good to see your inspiration and commitment towards fedora, see you
soon with us.
--
Regards,
Buddhike Chandradeepa Kurera
The Editor in Chief - FOSS User Magazine
Fedora Ambassador - Sri Lanka