The term "Selling yourself", was first used by employers to convey thier first impressions of the potential employee,
So
You sell yourself in the first 30 seconds of the interview:

Pesentation - dress ready for business

Communication - be the first to greet the selection panel( or employer) introduce yourself, do not wait for them to address you

Eye for detail - Do think about your answer, and give concise and pointed answers, and do not try to expand an answer unless it is required to be of indeapth detail


Show confidence - be a little on the assertive side, without being arrogant when speaking, make sure you are heard, speak firmly and clearly

And a good one if you have a male interviewer,

Have a good firm handshake, nothing is more off putting than someone who's greeting is like grabbing hold of fairyfloss

Good luck!

__________________
Enjoy yourself!
Enjoy me!

Behind me is a Woman rolling her eye's!

The only opinion about me that matters is the one I have of myself