Not sure if it should be posted here since it has to do a lot with graphic design, but since it's too attached to a photograph (in most cases) and we are all photographers who want to sign our own work properly, here I go.
The question involves the following (in my opinion) unseparable parts:
Example: ©2011 Name Surname Photography
How important (or not) is to put the character '©', the year or the word "Photography"? Are there any tendency rules or similar?
Are there any rules for the dimensions of the signature so it won't affect to the image?
Is there any proper space for the signature?
I'd like to add that I'm not asking about designing a logo but the form of a signature (again, not even the typeface or style of the signature).