see under face down.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
Examples from the Web for face up
I like to see my desktop covered with face-up yellow pages drying like paintings in the sun.Allan Gurganus: How I Write
October 16, 2013