1. Determine the contract scope: it is necessary to specify the position, size and quantity of all the walls contracted by the agent.

2. Draw up the contract: Draw up the contract according to the specific requirements of the wall painting advertisement and determine the payment method.

3. Check materials: ensure the quality of the wall, and replace the wall in time in advance to prevent excessive aging or damage.

4. Track the wall surface: check the wall surface regularly to ensure that the wall surface is in good condition and meets the requirements of laws and regulations.