Mirror Effect
ONE. Firstly type out the text you want to have a mirror effect.
TWO. Then duplicate this text by going to Layers > Duplicate

THREE. Now you need to flip this duplicated text. By going to Image > Flip

It should look something like this :

FOUR. Now move the duplicated flipped text so it's nearer to the orginal text.

FIVE. Now go to Layers > Properties...

Mess around with the opacity to see which one looks best, 30 - 50 normaly has the best results.

SIX. Click ok and your done! This is how mine turned out;

Tutorial by oh-vintage.co.uk