The sign for "SEEM" is done using a slightly curved hand.
Twist it once for the English sentence, "It seems to me ..."
Twist it twice for the concept, "seemingly."
SEEM / APPEARS:


Also see: COMPARE
Note: The sign "SEEM" is very similar to the sign MIRROR, except the sign
MIRROR is almost always done with a double movement and in general doesn't
use any facial expression (whereas "seem" often uses pursed lips and
somewhat squinted eyes -- as if thinking hard).
The "mirror" version of this sign uses the same handshape and
position, but the movement is smaller and quicker (for the noun "mirror." The small, quick
motion while looking ahead with a normal facial expression
would equal a "noun" -- as in "a mirror." If you wanted to tell a story about a person "looking in a mirror," you
would use a bit bigger movement, slower, and actually "gaze" into the
imagined mirror.
LOOKING-IN-MIRROR


See:
MIRROR