He knew how to pose his figures to perfection, so as to make the expression of their character a true pictorial subject.

In our picture it is on high ground that the hoofs of the pony of Don Balthazar Carlos tread.

So to raise the little Prince above the eye of the spectator was a good stroke, suggesting an importance in the gallant young rider.

The boy's erect figure, too, firmly holding his baton as a king might hold a sceptre, and the well-stirruped foot, are all perfect posing.

Velasquez does not give him distinction in the manner of Van Dyck, by delicate drawing and gentle grace, but in a sturdier fashion, with speed and pose and a fluttering sash in the wind.