Step 4: Create Double Knot

Picture of Create Double Knot
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In order to ensure that your shoelace does not come undone, making a second overhand knot with the loops created in the previous step is recommended.  This is done by crossing one loop over the other and wrapping it once around the other loop.  As seen in the picture, each loop is treated as a single inseparable string for this step.  Pulling on the loops to tighten the shoelace completes the process.