Focus on this artwork and explore the Technical.
Technical examinations show that it was originally even closer to the Bellini in Detroit, and that many changes were made in the course of painting. Unlike Bellini's usual careful underdrawing, Titian "used as his guidelines only summary strokes made with a fairly wide brush with thin wash shading".  Among several other changes, the head of the Child originally looked out at the viewer.
Titian underdrawing