In Viscountess Byng of Vimy, née Marie Evelyn Moreton, the subject is depicted in a formal pose, showcasing her elegance. The artist uses a rich palette of warm colors, primarily deep reds and soft creams, to highlight her attire and skin tone. The background is subtly blurred, drawing attention to the viscountess's face and attire.

Her expression conveys a sense of poise and confidence, characteristic of the early 20th-century British aristocracy. The painting is executed in oil on canvas, a medium that allows for detailed textures and vibrant colors. The dimensions are approximately 76 x 102 cm, making it a sizable portrait that commands attention. The artist's technique includes fine brushwork, particularly in the rendering of fabrics and the delicate features of the viscountess.

This work exemplifies the realism style, focusing on accurate representation and detail. Philip Alexius de László was a prominent portrait painter known for his ability to capture the likeness and personality of his subjects. This particular portrait of the Viscountess Byng of Vimy was created during a time when László was gaining recognition among the British elite. An interesting fact about this work is that it reflects the artist's skill in portraying not just the physical attributes but also the social status of his subjects, making it a significant piece in his oeuvre.