First, Make a Light, Incomplete Loop Like the Picture.
Take the End and Cross It Above the Rest of the Cordage Making a Small Loop. As You Finish the Loop and Come Back to the Rest of the Cordage, You Are Going to Want to Go Under the Rope Instead of Above.
Take the End and Loop It Around the Excess Cordage Near the First Loop.
Take the End and Prepare Another Loop. Tuck the End Under the Cordage for Now.
Take the End and Slip It Into the Loop You Just Created.
It's Hard to See, But There Should Be 2 Loops on the Left, the End of the Rope, Then One Last Loop With a Line of Cordage Running on Top of All of Them.
Tighten the Not Slowly As to Not Mess Up the 2 Loop, End, One Loop Pattern.