**Stroke-width overlay test – Tree Oil vs. Sunflowers (1888), Position 4**
This final overlay in the Sunflowers series places Tree Oil Painting brushstrokes over the upper vase section of Van Gogh’s *Sunflowers* (1888). Transparency was adjusted to observe groove alignment. Stroke sizes and stroke group dynamics match in both width and trajectory. This supports consistent brush control proportions across both works.

🎥 [Watch brushstroke overlay comparison – Position 4](https://www.youtube.com/watch?v=PGRzPZ3RgvU)