Here are some tips:

1. Use only Latin letters for the address.

2. Verify the accuracy of the postal code.

3. Keep the address concise, avoiding unnecessary repetitions or irrelevant details.

4. Include a valid contact telephone number in the destination country.

5. If someone else is receiving the package, include their contact details in the Ship To address.

6. Only include a PO Box if it is accepted by the couriers in your country.