The Outline Stitch mirrors the Stem Stitch and both (usually) make a nice and neat line - IF the right thread is used for the right stitch.
This is stitched in Z-twisted Japanese silk.
You can see how nice the Outline Stitch is for a Z twist, and how the S-twisted thread slightly untwists itself.
I made use of these two excellent crazy quilting templates by Sharon Boggon for designing.







