3-4 Ear
1.
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Select the faces like the picture above.
2.
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Extrude the faces.
3.
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4.
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Extrude again.
5.
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6.
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Sculpt the shape. Make like the ear.
7.
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8.
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Select faces like the picture above, then extrude.
9.
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Scale down.
10.
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Push in.
11.
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Make clean surfaces.
12.
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Delete the right side of the face.
13.
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Duplicate the object.
14.
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Flip the object.
15.
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F9 for vertices mode.
16.
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Align the center vertices by scaling down.
17.
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F8 for object mode.
18.
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Combine first.
19.
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Then Merge the object.
20.
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Make sure Threshold is small otherwise all vertices connect together.
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