Visible mending of a sweater: 3
Before
My client's sweater had many holes in it. The picture below shows just one of the holey areas.

Before: holes at the wrist.
After:
I used raspberry and gray yarns to both knit patches and do darns.
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After: a row of gray darns.

After: a raspberry colored darn.

After: three raspberry patches and several darns.

After: a close up of a triangular patch that abuts a gray darn.