First, sketch out the basic stick figure to get the body to the right proportions. Draw a circle for the head, but make a cross section that extends it (to leave room for her chin). The horizontal line is where the pupils of the eyes will sit (half way down the face), the vertical line should go right down the center of her face. For her hips, draw a simple oval about as wide as her head. Also, note that the arm extending behind her should appear shorter and slightly smaller than the other one.
Second, draw the basic shape of her body, building off the stick figure skeleton. Leave a little space between the top outline of her hair and her skull. Don't worry about her feet just yet, but keep her limbs really thin. The curve between her chest and waist is the bottom of her ribcage. Be careful not to exaggerate that too much.
Now add some details, including her hairline, shoes, and where here clothes will be. Keep all clothing lines (ie. the waistline of her shirt, waist and bottoms of shorts,etc.) slightly curved to show that she's three-dimensional.
Next, draw in her facial features. Draw the eyeballs first, with the pupils sitting right on that horizontal red line, and then draw the 3/4 almond shape around them. Make sure the top eye lid touches the top of the iris (colored part of the eye). Because this is sort of a 3/4 view, her right eye will seem closer to the side of her head than the other.
Lastly, draw in her goggles, the logo on her shirt, her belt, and a few other final details. Clean up your line work, erase the red stick-figure lines, but keep all the other ones. Put a rock under her feet, add some color, and you're done!
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