I hate to break it to you, but this isn't the Choleroc temperament's main trait. All I see here is an angry dragon. A Choleric is described as an adventurous leader who does everything to get the job done. Impatience may be a TENDENCY for them, but ONLY a tendency. In fact, another temperament prone to anger is Sanguine, which is another reason this picture is not clear.
In a nutahell, this is how I would describe all four of them: Order vs Chaos is Melancholic vs Sanguine; Harmony vs Discipline is Phlegmatic vs Choleric.