This crow study was completed in my small (5 1/2 by 8 in) sketchbook. Rather than using a pigment (ink) pen this image was rendered with a brush, Speedball Super Pigmented Acrylic Ink, and acrylic paint. Using a brush with the acrylic ink allows for the opportunity to make a variety of marks without changing tools. The super black ink is highly opaque when undiluted but I also used it as a wash here to create different tones. I opted to work from dark to light and layered acrylic paint on top of the ink to flesh out the image.