Bend one half inch of the wire (longer for a bigger loop) to a 90 degree angle with flat nose pliers. Grip the wire at the end with your pliers. Hold the stem of the wire with your fingers and roll the wire toward your fingertips, keeping pressure on the stem to hold the shape of the angle.
If you are unable to turn your wrist any further, release the wire, keeping them in the loop, rotate backwards and turn a bit more until the loop meets the memory wire.
You can finish this loop by attaching a charm to it to make it look nicer.
Simply put a drop of glue at the end of the wire and press the memory wire end onto it. Hold it for a few seconds to secure the glue.
This finish looks very professional and gives the piece a polished look.