The sign for "above" varies depending on if you mean
"hovering over" or if you mean "more than."
Much of the time we simply use classifiers to
show where things are in relation to each other.
Hold your base hand (non-dominant hand) steady while circling your
dominant hand above it. The
movement is as if you were washing off a table.
ABOVE:




"above" = MORE-THAN:



Also see:
MORE-THAN