Portrait of Eduard Schaller from Vienna

Lightly sketch the overall proportions and pose of the subject.

Refine the facial features, paying close attention to the eyes, nose, and mouth.

Begin adding shading to define the form of the face and neck.

Render the hair, using small, curved strokes to create the texture of the curls.

Add details to the clothing, using hatching and cross-hatching to create shadows.

Refine the background with subtle shading to create depth.

Add the signature and any other text present in the original.

Make final adjustments to the values and details to complete the drawing.