1. Select Posts and All posts on the side menu
2. Select Add New / Edit the post you want to change the feature image
3. Scroll down to Featured Image on the right and select Set Feature Image
4. Upload files (images) under Featured Image
5. Select Set Featured Image
6. Select Publish / Update after setting the feature image
* Uploaded Files : Always make sure that the image files are then 400kb. If the size of the files is more than 400kb it can slow down the site and brake links.
* Publish : It is important to ALWAYS select Publish after creating / updating a post to ensure that the upload/changes show on the front end of your site.
* Font End : Always make sure that you check the front end of your site to ensure that the changes / updates are showing on the front end.