Before you make your first mark, you need the right gear. Unlike watercolors or acrylics, oil painting requires a few extra steps for cleanup and thinning.
This means "at once." You complete the painting in one session while the paint is still wet. This is great for capturing light quickly and achieving a spontaneous, painterly look. Oil Painting How Techniques and Materials
Don't aim for a masterpiece on day one. Start with a "Grisaille"—a monochrome painting using only black and white. It helps you master (light and dark) without getting distracted by color. Before you make your first mark, you need the right gear