**Brushstroke alignment – Tree Oil vs. Self-Portrait 1889 (Position 1)**
This image compares a group of vertical strokes in the Tree Oil Painting with the background stroke pattern in Position 1 of Van Gogh’s *Self-Portrait* (1889). The angular rhythm, stroke length, and density align remarkably. This visual comparison is supported by a video analysis.

🎥 [Watch brushstroke demonstration (Position 1)](https://www.youtube.com/watch?v=FQ4krAbHO5w)