In William Thorne, John Singer Sargent presents a striking portrait of the subject. The painting features rich, warm colors, predominantly browns and golds, which create an inviting atmosphere. Thorne is depicted in formal attire, with a serious expression that suggests depth and contemplation.

The background is softly blurred, drawing attention to the figure in the foreground. Sargent's technique in this portrait showcases his skill in capturing texture and light. The brushwork is loose yet precise, allowing the viewer to appreciate the details of Thorne's clothing and facial features. The play of light across Thorne's face adds a three-dimensional quality to the work.

This painting is executed in oil on canvas, a medium that Sargent frequently used for his portraits. William Thorne was painted during a period when Sargent was gaining recognition as a leading portrait artist. This work exemplifies his ability to convey personality and character through his subjects. An interesting fact about this painting is that it was commissioned by Thorne himself, which reflects the trust and admiration he had for Sargent's artistic vision.

The portrait remains a significant example of Sargent's contributions to the genre of portraiture.