(CNN/Gray News) - Time to pull out your best duck face, pouty look or smize (smile with your eyes, for those not in the know).

It's a day for you to admire your favorite self-portrait. Which, really, is just about everyday with social media and smart phones.

According to the Library of Congress, a photographer named Robert Cornelius took the first selfie in 1839.

Cornelius had to remove the lens cap, run in front of the camera, sit still for a minute, then cover the lens up again.

The technology was so new, Cornelius was using what is called a daguerreotype where an image what exposed to a polished copper plate – not even film.

2m Light Stand

That word was not added to the Oxford Dictionary until 2013, and that same year, was named Oxford's world of the year.

-- Hold the camera up – well, smart phone - above your head and look up at it.-- Look for the best light. Side light from windows works, and don’t look directly into the sun.-- Watch your backgrounds, you don’t want a lamp sticking out of the back of your head.-- Sure, use filters if you want, but don’t OVER use them.-- Play around with angles, figure out which works best for you.-- Be natural.

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