The Zig-Zag Stitch is an easy stitch which is sewn in single pass. It is used on outlines and in closed rows as filling.
Bring the needle up at 'a' and go down at 'b', then again come back up at 'a'.
Go down at 'c' to create a diagonal stitch and come up at 'd'.
Go back down at 'c' and come up at 'd', then go down at 'e' to create a diagonal stitch.
Continue this pattern till the end of the row.
Zig-Zag Stitch Back