Job title for business cards / email sig

I have always done without an email signature that includes any job title and without business cards featuring the same.

My work involves a slight mish mash of things:
- Marketing copy for leaflets, brochures and web
- HTML flyer and newsletter design and writing
- Odd jobs for main client like embedding jpegs they provide into emails
- Updating one website via the CMS

I want to remain open to miscellanous stuff as well... one gig recently has involved designing educational activities for kids.

So... under what kind of job title should I market myself? I am thinking something like 'Copywriting and Digital Marketing'. But is this too broad? Can you think of anything better? Or is it a better idea not to bother at all?

Cheers
D.