Because you require people to donate points to enter, this is considered a raffle and is not allowed by dART's rules. If you get discovered by a MOD, this will get deleted, and in worst case, you will have your account suspended. Someone else already let you know about this rule, and I now I did too, so consider yourself warned.
I think it's great the you're doing this giveaway, but you're not allowed to add donating points as a requirement, sorry! Please remove that rule and return the points you got to avoid getting in trouble. Good luck!