Tutorial - Modeling Tennis ball in SolidWorks?

Here is the tutorial.
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Step 1:
Draw a semi-circle.
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Step 2:
Revolve it about 180º.
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Step 3:
Front plane>>Sketch.
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Step 4:
Draw this sketch.
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Step 5:
Exit the sketch. Curves>>Project curve.
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Step 6:
Select the sketch and hemi-spherical surface.
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Step 7:
Back face>>Sketch.
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Step 8:
Convert the circular edge and also offset it.
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Step 9:
Draw lines and trim the outer sketch.
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Step 10:
Fillet the edges.
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Step 11:
Exit the sketch. Swept cut.
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Step 12:
Select the sketch as the profile and the curve as the path.
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Step 13:
Fillet the edges.
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Step 14:
Mirror the body about the face.
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Step 15:
We have the tennis ball body.