To form possession in Turkish. All you need to add possesive sufixes to your nouns.
Arabam also means my car Benim arabam is also means my car.
Senin araban mı? / is it your car?
Evet benim. / Yes mine.
Evet benim arabam / Yes it’s my car.
Try to write possessive pronoun for words :
You can write them to Comments so i can correct you. You can try other words as well.