If you login to the members area on the link below:
Then go to:
Scroll to the very bottom of the page and your profile image will appear, it will have 2 options underneath:
To edit your profile click 'edit', this will bring up the form with your profile information, and you can edit and then submit your details again, which will update your profile.
To delete your profile click 'delete', a window will pop open asking if you're sure, and you would click to confirm you'd like your profile deleted.