Go to your Gallery and select the image you want to delete from the display of Media in this Gallery. The selected image will have a yellow border:
It will also appear in the display at the top of the page. Click Delete to remove this image and its associated information:
A pop-up will ask you to confirm that you wish to Delete the image and allows you to Cancel if you have changed your mind!
You can also delete any image by clicking on the X which appears when you hover over the thumbnail of the image. Once again, a pop-up will ask you to confirm that you wish to Delete the image and allows you to Cancel if you have changed your mind!
