Click on Add Content
Click on Add Content and decide between a basic page and an article.
Copy and Paste Block of Code
Change the Text Format to Full HTML. Copy and paste the code below into the Body of your new content, and then click Save.
Note: If your Plugin isn't rendering correctly, try unchecking the "Correct faulty and chopped off HTML" setting in your Drupal configuration.
Go to your Drupal site to customize the Flickr Gallery
You can now customize POWr Flickr Gallery by visiting your live Drupal website. Open the POWr Editor by clicking on the gear icon . This will open the POWr Editor. Change anything you'd like, from design to contents, in the visual POWr Editor.