How to clear out my pictures

Sorry if this is the wrong place to post this, but I can't figure out how to clear my storage here by deleting photos. Any advice is appreciated.

thanks.

Click on "Settings" in the upper right corner of any page on the site next to where it says "Welcome [username]", then on the page that loads scroll down the menu on the left until you fine "Attachments" and click on it. That will bring up a page that lists all the attachments you've uploaded in the past. Simply check the box to the right of each one you wish to remove, then click the "Delete Selected" button at the bottom of the page to remove them.