Sunday Stitch School - Lesson 61: Raised Fishbone Stitch

In my neck of the woods the trees are showing off their new leaves, so I thought we should do a leaf-shaped stitch today.

Here is Raised Fishbone Stitch,
and I hope the pictures are enough to explain the way to stitch it.

Beware, this stitch is certainly a thread-eater!

Mattia tells me the two names in French are:
Point d'arête en relief
Point de passé plat croisé 

Homework:
SSS Reference Chart
Teal tailoring wool scribble cloth
Aida sampler, if possible.