Research the company and what they offer.
Display your enthusiasm for role, sunglasses, teamworking and providing best in class customer service.
Be ready with questions related to previous experience,
Question you can expect: give me an example of a time you had to deal with a difficult person.
What has been your biggest achievement
Sales background would be advantageous however as long as you display you are committed, outgoing, flexible and have previously provided fantastic customer service they would definitely hire you.
Research the company
Be yourself, salesmanship and team work impirtant
Explain about face shapes, brands, and add ons