How to Sign "Earth"
Form your non-dominant hand into a closed fist and hold it in front of you with the back of your hand facing up. With your dominant hand, extend your thumb and middle finger while keeping your other fingers relaxed. Place your dominant thumb and middle finger on the back of your non-dominant fist, gripping it slightly. Finally, rock your dominant hand back and forth at the wrist a couple of times while keeping your non-dominant hand completely still.