Isabella of Portugal

Create a detailed sketch of the portrait, paying close attention to proportions and the placement of features.

Establish the background with a thin layer of dark reddish-brown paint.

Block in the basic shapes and colors of the face, clothing, and veil using thin washes of paint.

Begin building up the skin tones with multiple layers of subtle color variations, focusing on highlights and shadows.

Paint the clothing, adding details such as folds, patterns, and textures.

Carefully render the jewelry and other accessories, paying attention to their reflective qualities.

Glaze the painting with thin layers of color to unify the composition and add depth.

Add final details and highlights to complete the portrait.