Say thank you to your interviewer at the end and after by email or send a 'thank you' card by post.
Eat an energising meal beforehand - but no smelly meals!
Think of body language like not playing with a pen, sitting upright, not slouching and speaking clearly.
Do not be fearful to declare you don't know an answer.
Make a Google Alert on the firm to know latest developments.
Check your recent social media posts are positive.
Do not use unprofessional terminology.
Suggestions for those looking for employment:
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Key things for this position:
Relevant background in a related job and over one years' involvement in this industry