The article should be well structured into sub-headings.
Should not contain any grammar and spelling mistake, Well written-format and easy-understandable language, and should be according to the niche.
You can link to the articles, website related to the content. But should not be any promotional link. If you want to put promotional link then we;ve other criteria.
The post/CONTENT should not be republishing anywhere else on the web without our permit.
You can add few relevant royalty free images to make your post visually appealing.