Madonna and Child with an Angel

surface prep

Construct a solid wood panel, preferably using radial-cut poplar, willow, or linden, excluding the outer sapwood (Source 2). Plane and sand the wood smooth. Apply a mixture of animal-skin glue and resin to the wood, then cover it with linen cloth; this combination is known as 'size' (Source 2). Once the size is dry, apply layer upon layer of gesso (chalk mixed with glue), sanding down each layer before applying the next. This process may involve up to 15 layers to achieve a smooth, hard surface resembling ivory (Source 2). This meticulous preparation is critical for the luminosity of the tempera layers that follow.

underdrawing

Lay out the design on the prepared gesso ground using charcoal (Source 2). The drawing should aim for 'minute visual expression' and artistic accuracy rather than mere scientific precision, capturing the emotional significance of the figures (Source 4). Ensure the construction is accurate before applying paint, as correcting errors in tempera is difficult and can ruin the lucidity of the work (Source 8).

underpainting

While specific underpainting methods for this exact work are not detailed in the sources, the general tempera technique involves applying paint in very small, almost transparent brushstrokes (Source 2). There is no mention of a distinct oil underpainting (imprimatura) for this period/medium; instead, the white gesso ground itself acts as the light source, reflecting through the thin layers of pigment. The artist likely began with the general masses of color, building up volume through thin layers (Source 2).

Egg Tempera Layering

Using small brushes dipped in a mixture of pigment and egg-yolk, paint is applied in very small, almost transparent brushstrokes. Thin layers create volumetric forms (Source 2).

Gesso Ground Preparation

Applying up to 15 layers of gesso, sanded between each, to create a hard, smooth surface that enhances the luminosity of the tempera (Source 2).

Color Contrast

Using complementary colors to modify the aspect of a color without changing it. For example, surrounding an orange drapery with blue tones to make it appear more orange (Source 1).

Artistic Accuracy in Drawing

Focusing on the emotional significance and vivid representation of form rather than mere scientific accuracy, ensuring the drawing conveys the artist's intended feeling (Source 4).