Get a sketch pad or ask the Author of Avatar the last Airbender
you go to your profile and then go to avatar then there will be a sentence at the top that say feeling creative create a avatar and you click it and create your own avatar i have on my name is tayloristhebest101
It's the same as drawing any person. You can do it in whatever style you like, just draw a person, and add the basic features of the avatar. The amount of detail you add can vary. And everyone has their own style.
The hourglass...draw it
draw a population then draw where the animals are (one animal at each region) then draw the legend and tell how many animals are where the certain animal is and draw (i recommend this) the estimated amount of animals.
Quick Draw - 2013 The Legend of Belle Star 1-2 was released on: USA: 5 August 2013
watch the show and you'll find it in the opening.
you would draw contour lines, and include a legend, and some landforms such as rivers, oceans, mountains, valleys... etc
If your talking about the door when you get to the sage or whatever in the water realm, then you draw a sideways hourglass.
Tthe specific reference used by the cartographer to draw the map. You can interpret the map by looking at the legend and its specific shapes and symbols.
the hourglass itself