Blog should be informative and contain information that may not already exist on Google. Remember people search for answers on google, so blog should be in responsive form
Remember images should always be copyright free, your content and images should be your own. Google AdSense is very strict about its copy rights policy.
The speed of each page of your website should be greater than 90 on Page Speed insights, especially mobile page speed.
The theme or template of your website should be light weight, mobile friendly and SEO friendly. Keep website interface simple
Make sure that there is no redirection from your website to any other unknown website.
Do not provide any kind of download button on your blog or website.