HOW TO MAKE HIGH QUALITY GOOGLE CAMPAIGN
Quality Score
To reach the high-quality Google ad, you need to have a high-quality score. Quality Score approximates the quality of the ad, keywords, and landing page. Higher quality ads can lead to lower cost and better ad positions. The more your ad and landing page are related to the user, the more likely it is that you'll see higher Quality Scores. Your ad's position on the page is determined by your Ad Rank, a combination of your bid, the components of quality score (expected clickthrough rate, ad relevance, and landing page experience), and the expected impact of extensions and another ad formatting. To get your ads eligible for the top spots, you need to do the following.
Ad Rank:
Improve your Ad Rank, consider including more relevant information in your ads about your business to improve your expected clickthrough rate (CTR) and by creating ads with extensions, such as site-links. You should also focus on relevance, so make sure your keywords, ads, and landing pages are relevant to what customers are searching for. If your ads aren't applicable to what the users are searching for, the Ad won’t be shown on the first page, and won't get as many clicks and this will lead to a poor performance over time.
Keep your bid competitive in other words keep your bid high enough so that you can compete with other advertisers who are also bidding on the same keywords you are. Finally, you need to monitor your campaign results by making small regular improvements that could have a big impact later.
Relevancy
The best performing ads are usually the ones that people find the most relevant. Think about how you search and surf the web, how you tend to ignore things you aren't interested in and focus on those that are relevant to you. If you're craving some chocolate cake right now, you'll probably ignore that ad about chocolate cookies (unless you're also craving those). If you know what your customers are looking for, you can focus on making your campaigns, keywords, ads, and landing page more relevant to them, making customers more likely to click your ads. Here are some things you can do to make your ads more relevant to your customers.
Structure
Create very specific ad groups, each one should be within your campaign and focus on a single product or service so that your ads appear more relevant to customers. Choose your keywords wisely, include keywords that directly relate to the specific theme of your ad group and landing page. Include keywords in your ad text, keywords in your ad text (especially in your ad's headline) show people that your ad is directly relevant to their search. Your ad text should have a strong call-to-action. A call-to-action encourages users to click on your ad and helps them understand what they can do once they reach your landing page. Regularly review your campaign performance Test and tweak your campaigns to get the results you want. Review your ad performance to help figure out the best ways to achieve your goals. As you watch your ads over time, you might notice changes to your clickthrough rate or conversion rate.
We conclude that to have a high-quality Google Ad, you need to have a high-quality score and to have that you need to focus on the quality of the ad, keywords, and landing page.
You also need to improve the Ad Rank, so you should also focus on relevance, so make sure your keywords, ads, and landing pages are relevant to what customers are searching for, and keep your bid competitive. The best performing ads are usually the ones that people find the most relevant and you find them on the top of the first page.
Source: support.google.com/adwords/answer