When Preparing a Ads for Pay Per Click Campaign points that need to be consider are relevancy of Page as per keywords and ads should be creative it should capture attention of visitor
first you no categorize the different campaign based on their promotional attributes like targeted audience, products of campaign, language and other setting based on network on which you advertise and device on which ads get displayed. There is clear guideline on landing page optimization of each campaign, you should follow those to improve quality score of campaign.
An ad campaign requires more than distributing fliers or creating a website, it is about connecting with customers.The basis for a successful PPC campaign is to target the right group of search phrases that you want to use to trigger the display of your adverts.