A good advertising creative does not need to contain every possible piece of information. Its job is to communicate something relevant enough to encourage the right next action.
Start with the audience problem or interest
Understand what the intended customer is trying to solve, learn or achieve.
Make the main message easy to notice
Visual hierarchy matters. Important information should not be buried beneath unnecessary details.
Show rather than merely decorate
Use demonstrations, context or product visuals when they help a customer understand the message.
Connect the creative to the destination
The next page or conversation should continue the same story rather than forcing visitors to begin again.