He enhances the stature of Charles I. If you look closely, you can see that he is taller than his pages and his horse.
Neoclassicism is a term related to artistic and creative movements that reflect qualities of ancient Greek and Roman philosophy, culture, and art.
Also, Jacques-Louis David was a 19th century painter who is considered to be the principal proponent of the Neoclassical style.
V= -2.25
-17/4= -4.25
-4.25+2= -2.25