Currently, the only way to delete (archive) an image you requested is to email firstname.lastname@example.org. You will receive an email confirmation when your image has been archived.
However, if you are the owner of an image, you may change the "Date to hide image from public view" as well as the "Visibility" for your image.
To do so, select "Images" , then select "My Images" .
Select the image you wish to modify and click "Edit Details"