I turned a checker pattern into this 3 color checkered red, orange and yellow patterned potholder. To make it, use the following colors for the columns:

red,red,yellow,red,red,red,red,red,yellow,red,red,red,red,red,yellow,red,red,red

Next weave in these colors for the rows:

orange,orange,yellow,orange,orange,orange,orange,orange,yellow,orange,orange,orange,orange,orange,yellow,orange,orange,orange

Start off by weaving the first row color of orange underneath, then over the column loops.
Weave the second row color of orange over, then underneath the column loops.

To make this using different colors, substitute your first color wherever red appears, substitute your second color wherever orange appears and substitute your third color wherever yellow appears.

Tie off the ends, starting at the top left corner. The hanging loop will end up being the 2nd loop at the top left corner.
See my Loom Potholder Tutorial for further details on weaving the ends together.

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