You now have two “core” strands on the left and two “core” strands on the right. The loose cords are separate from these core strands.
To make an overhand knot, take the ends together in your hand. Cross it over itself in the front, making a loop. Push the ends through the loop in the back, bringing them forward. Tighten the loop to form the knot. Cut off the ends. You should now have a length of folded-over cord as long as your wrist with a knot on one end.
