The Israeli New Moon Soc sent out their observation chart, I’m attaching a chart with their’s that displays how to use your hand to measure degrees in the sky.
When the instructions say a fist left of sunset, it is 10 degrees east of the sunset (here in Israel). One handspan above the horizon is 25 degrees. These measurements are made with the arm fully extended.Updated Feb 13, 2018, 8:10 PM