DUckling
hey sweetie
look ,,as long as you pass the required tall on your foot toes,,it is fine
about the open day ,,they will check your online application and send you the invitation on the day they will held OD at your country
about white teeth,,,not required,,just have a nice smile,,i know people has no sign of beauty and been accepted
just smile,,and make them feel like you are a welcoming person and for you making that effort msha allah ,,,keep going every new single information will help ,,
keep going and hold on with your dream,
if you want it you will find the way
GOOD LUCK