Vowels: Standard - 'i' as in 'hit', 'ə' as in ‘the’. Variation - 'e' followed by 'ng' and a vowel is 'e' as in 'fern'.
Consonants: - 'rr' roll or trill tongue, 'ng' (velar-nasal) combine 'n' and 'g' while back of tongue touches soft palate plus nasal vibration.
Note - fast and no gaps is normal pronunciation.