**Brushstroke zone selection – Tree Oil vs. Sunflowers (1888)**
This image highlights the position selected for stroke-width comparison between the Tree Oil Painting and Van Gogh’s *Sunflowers* (1888). The red circle marks the brushwork near the base of the vase in the Sunflowers and a corresponding brush zone in the Tree Oil Painting's lower-left corner. Both were used for measuring stroke thickness using Photoshop CS.

📍 Reference: [Sunflowers (1888) – Google Arts & Culture](https://artsandculture.google.com/asset/sunflowers/NgEmkPlWfmO9aQ)