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How to Blend Acrylic Paints on Canvas

Most acrylic paints are thick and creamy and can be thinned to a watercolour-paint consistency or applied with a palette knife. This paint dries more quickly so that, unless using a retardant, the artist must work quickly to apply and blend paint to make one tone of colour move smoothly onto another. This is the reason that blending acrylic paints on canvas takes a slightly different technique than using oils. Blending colours on canvas can be done physically or optically.

Apply different tones of a colour next to one another on the canvas and while they're still wet, stroke the line between them with a damp, clean brush to smooth the transitions. For example, when painting an orange, the dark, medium and light shades of orange and white are applied in the right locations on the sketch and then blended to create a three-dimensional form.

Apply a darker shade of colour in thin lines as you would with a pencil or pen to shade on paper. This early Renaissance method of crosshatching allows you to blend by applying darker shades of the hue gradually. Create shadow by first applying thin lines of a darker shade of the hue on top of the lighter tone, and build up the shadow by applying more lines crossing the first at angles, creating crosses in areas where you want darker tones.

Stippling is another optical method that creates dark and shadow on a canvas. After covering the area with a light shade of the desired colour, use a fine brush to stipple or lightly dab small dots of darker paint onto it. Apply dabs of the medium tone first, and then apply the dark tone of the colour in the areas of the canvas that should be darkest. Both form and texture are created on the canvas this way.

Tip

Always keep your brushes clean when painting. Wipe the brush in between blending shades of a hue to prevent muddying the paint. You can't wipe away acrylic paint from the canvas the way you can with oils, but if you act quickly you can scrap and sponge off excess paint from the canvas and repaint the area.

Warning

Take your time when crosshatching or stippling. It's easy to make mistakes while you're rushing.

Things You'll Need

  • Canvas
  • Paint brushes for acrylic paint
  • Acrylic paint
  • Palette
  • Container for clean water
  • Rag or paper towels
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About the Author

Joan Mansson has been writing original puppet plays in her capacity as a librarian for over 20 years. She took several workshops with Woodstream Writers and studied with the Children's Institute of Literature. Mansson holds a Master of Library Science from Rutgers University and a Bachelor and Master of Arts from New Jersey City University.