Not really a study in the true sense of the word, as it is a fictitious plant (but hopefully, it looks as though it could be a real plant).

What I am studying, is the type of effects that can be achieved, by playing around with the many settings that can change the appearance of the skeletal strokes that Expression uses.

Once I have built up enough, stroke effects that I can recreate when required, I am hoping to attempt some studies of real plants.