There are a number of ways to make yourself a better option for potential delivery customers.
The first is simple. Verify your account. Once your account has been verified, customers will know that you are serious about working with them, and with DeliveryD2D.
The second option, is to verify your insurance. No customer wishes to entrust their goods / valuables to an uninsured driver.
A third option is to improve your feedback score as you go along. Once you have delivered the goods, ask your customer to leave you a positive feedback for the transaction.