To edit a deviation or scrap submission simply view the deviation you wish to edit and then click on the button entitled 'Edit', in the sidebar to the right of the deviation. From here you can choose to edit various components of the deviation file, including the title, the keywords, the description, the mature content rating, the critique preference, the category and the deviation file itself.
Note that each edit is confined to exactly what you're editing - for example, if you alter the pictures description, only the description is changed, and the image itself is left untouched. The only exception is when you're uploading a new picture - in this case, the preview is being regenerated as well to match your work.
Please also see: http://help.deviantart.com/666/
To delete a deviation or scrap submission simply view the deviation you wish to delete and click on the button entitled 'Delete', in the sidebar to the right of the deviation. You will then be shown a dialog, proceed by selecting a reason for deletion.
See also: http://help.deviantart.com/10
Submissions Won't Delete:
If you browse using Google Chrome and you have disabled the secondary popup that appears asking you to confirm the deletion process you will no longer be able to delete correctly. You will have to enable this popup once again in order to complete the deletion process. For assistance with how to enable these types of popups please consult the help services for Google Chrome.
Still need help with a technical issue? Contact the Help Desk.