My opinion, they're all bad, no offence. To start with, the signatures are just a font, bevelled at I would say 10%, with a shadow or maybe a darker duplicate layer of the first text layer.
The dealio with webdav. Just editing files is done using a "PHP Shell" a script that allows the user to go into the webdav after uploading a file using the webdav exploite and navigating through all of the files on your VPS.