Here are steps for laced Back stitch.
First make back stitch foundation.
Later on pass another color thread through back stitch.
As per the pictures once pass through right side of the stitch next time pass through left of the stitch and so on.
Here also needle should not pierce in to the fabric.
Contrast color threads will give nice look to the stitch .
Soon will be back with more tutorials...
Till then take care :)