Please fix spell-check typo: sconces, not scones.

Use some 14" and 20" blue tape to mock up the length of the sconces.

12' is a very long vanity. Without seeing how it's laid out I can't know for sure, but shouldn't you be using four sconces? I have an 7' vanity with four sconces.

Ulster Park, New York Residence · More Info

I need to see the things you already have and for sure that layout on the wall.

You need to show the vanity, please?

Two mirrors, a mere 32 inches wide, seems NOT enough mirror on 12 FEET of vanity.

Show the vanity........: ) and where it sits in the bath.

You seem to ask questions, as you did earlier on the height of the vanity

https://www.houzz.com/discussions/6435610/what-should-be-the-height-of-a-vanity

..........and you don't return.

That isn't the way to good answers or real help.

Someone should tell the blasted Google trying to read your mind, that a SCONE is a bakery delicacy, and a SCONCE is lighting.

Please correct the mind reader before you submit,,,,,,: )

We shall assume you did not correct the Google word,