This stitch is beautiful, but it needs getting used to ;-)
I like it especially in freeform needlework.
Fortunately it is (theoretical) learnable, e.g. in this tutorial on how to make the bullion stitch.
The description sounds easy, doesn’t it? ;-)
I break my fingers and knot my thread in any case ;-)
There are much more instructions (perforce ;-)), by googling for the bullion stitch e.g. you get lots of help.
Unfortunately you still must crochet it your self ;-))
Here at unikatissima: