September Sky (2025) Original Oil Painting by Mark Thirlwell

This oil painting on canvas‑board (60 × 40 × 0.4 cm) makes expressive use of sfumato throughout the sky, where cloud forms dissolve into one another through soft, smoke‑like tonal transitions. Edges are deliberately softened, allowing greys, blues and whites to merge seamlessly, creating a sense of moisture, air and atmospheric depth. Light appears to emerge from within the cloud mass rather than sitting on its surface, giving the sky a naturalistic, shifting luminosity.

Together, the sfumato transitions and delicate glazing give the work its atmospheric power: a sky full of movement, quiet drama and luminous serenity, anchored by the warm earth‑toned base that completes the composition.

Materials used:

Oils on canvas board

Details:

• Oil painting on Canvas
• One of a kind artwork
• Size: 40 x 60 x 0.4cm (unframed) / 40 x 60cm (actual image size)
• Signed on the back
• Style: Expressive and gestural
• Subject: Landscapes, sea and sky