1) Open a new ball blob (or open any blob you wish)
2) Turn on the Mirror Tool if you want your ears to be the same on both sides
Long Animal Ears:    
1) Select the Point Pull Tool
2) Select a spot on your blob and pull out an ear(s)
3) Select the Poke Tool
4) Select a spot low on the ear to poke
5) Use the sliders and the 'Belly Button' Tool to scoop out the ear
6) Use your left mouse button in the track ball to rotate the view
7) And select to poke on the backside of the ear on the top
8) Finished ear
Human Ears:    
1) Select the Freehand Sketch Tool
2) Draw an ear shape
3) Select the Curve Pull Tool
4) Select the curve you just drew and pull it out a bit
5) Move the sharpness slider all the way to the left to make the curve sharp
6) Select the Point Pull Tool (this will also complete your Curve Pull changes)
7) Select a spot inside the lower ear
8) Select the ball handle (you can tell by the cursor that you have it) and pull it inward
   
9) Use the sharpness sliders as needed to help create your human ear