1. A Foreigner (Native English Speaker)
2. No Teaching Experience, except teaching english in EF when still young.
3. Not young anymore..
4. Objection : working in Indonesia with proper documents.
5. Have Master degree in common major but not teaching.
Question :
What should I do now? Shall I take a certification or such before applying?
Based on the "question", Misna, (may I call you Misna?) MiNa?) I'd guess we are thinking the facts mentioned refer to you, specifically. Correct?
You are no longer WNI? If not, then the same standard will apply as to any other foreign teacher / applicant / wannabe.
As far as meeting "native speaker" requirement, the Indonesian government seems to define native speakers (English) as a person originating or bearing passport from the US, Canada, UK, Australia or New Zealand.
No teaching experience is a definite problem, if you are considered as "TKA". I am not sure about the assertion made here that experience teaching in a language school / training center such as EF would not be applicable, but in any case, one is now officially required to have five years teaching experience, as I understand things.
"Not young anymore" - we have this in common
- it's still technically possible as long as at least under 58, as mentioned by Mr. King ... though being near that mark would certainly shorten any "career" as a foreign teacher in Indonesia considerably.
#4: I think perhaps you mean to say "objective", rather than "objection"?
#5: What is the major, specifically of the Master's degree? As King says, you should have a degree with a major considered as "cocok" for the subject you want to teach, so for English it can be English Lit, English Linguistics, TESOL, etc, or a degree in education such as B.Ed or M.Ed.
Bottom line, if you don't have a degree with corresponding major to the subject and five years experience, you won't meet the official government requirements, so taking a certificate course (such as TEFL or TESOL, CELTA) may be something of a waste of resources, if teaching English in Indonesia (and nowhere else) is the "objective".
For WNI, of course, the same requirements do not apply (five years experience, native speaker, etc) and one should check for the relevant requirements for WNI candidates.