The sign for "face" has a couple of variations.
A general version that means, "face," "looks," or "appearance" uses a
palm-back "5-hand." Circle the hand around your face once,
FACE (5-hand version)
Another version of the sign for "face" uses an index finger to trace a
circle in the air around your face.
FACE (index finger version)
Whenever I show more than one version of a sign students tend to ask me,
"What is the difference between those two signs?"
The "5-hand" version is a bit more general and tends to mean "looks" as in
the features of the face. It can be combined with a "wh"-type facial
expression (furrowed brows, jutted lower jaw, etc) to convey the question
"what does his or her face look like?"
The "index finger version" tends to mean "a face." Additionally, the
"index finger" version of FACE is related to the sign for "LOOK-LIKE."
The sign "LOOK-LIKE" actually starts out by pointing an index finger at the
face as if you were going to sign FACE and then instead of circling around
the face it transitions into the sign "SAME." The "index finger
pointing at face" + "SAME" compound can be combined with a wh-facial
expression to ask what "something" looks like. (It is not limited to just
"faces" like the "5-hand" version is.)
Sample sentence: Do you look like your dad?
If you mean "face" as in the
gladiator faced his opponent, then you use a totally different sign than the
ones here. You use a sign that means "face to face" -- you hold your hands
up, flat handshapes, palms facing each other, about 7 or 8 inches apart,
fingers pointing upward.