Whipped Running Stitch
A variety of running stitch

Whipped running stitch is also known as cordonnet stitch.
Whipped running stitch will follow intricate curves easily.
Work a foundation of running stitch.
Whip a second thread over this foundation, without picking up any ground fabric.
Use a blunt ended tapestry needle for this part of the process to avoid splitting the foundation running stitches.
A much heavier contrasting thread can be used for the whipping.
A much heavier contrasting thread can be used for the whipping.
Metallic and fine ribbon also creates interesting effect.