2025 Winter Acrylic Portrait Challenge, Lesson 1: Prepping Your Canvas for the Portrait

Master the art of prepping your canvas for a smooth and successful portrait painting

In this first lesson of our Winter Acrylic Portrait Challenge Masterclass, we will dive into the crucial process of prepping your canvas for the portrait. Whether you are a seasoned artist or a beginner, taking the time to properly prepare your canvas for the portrait that will ensure that your painting has a solid foundation for detailed and lifelike results.

Step 1: Setting Up Your Canvas

Before diving into the painting process, it is important to ensure that your canvas is in good shape. Start by setting up your canvas firmly on the easel. In our challenge, we are using a 16×20 canvas, which is a great size for portraits. When setting up your canvas, always check the square corners with a square tool or simply by eye. You should also inspect the canvas from the side to make sure it’s not bowed or distorted.

If you notice any bumps or dents, don’t worry this is a common issue, especially if your canvas has been stored for a while. These minor imperfections can be easily corrected.

Step 2: Fixing Wrinkles and Dents

Sometimes, after a canvas is unwrapped from its packaging, wrinkles or dents can appear. A simple solution for this is to lightly mist the back of your canvas with water. Use a spray bottle or mister to ensure that the entire back is saturated, especially in the corners. After spraying, let the canvas dry completely either by hanging it up or allowing it to air dry. This step is crucial because it tightens the fabric and eliminates any imperfections, leaving you with a taut and smooth canvas that will be perfect for painting.

Step 3: Applying Gesso for a Smooth Surface

Now, let’s move on to the critical step of applying gesso. Even though most canvases come pre-primed, the primer they use is often too thin to create a smooth and rigid surface. By applying gesso, you add a thicker coat that not only improves the rigidity of your canvas but also provides a smoother texture ideal for detailed painting.

Gesso also makes your canvas more archival, ensuring that your artwork will stand the test of time. For this lesson, we will be applying a custom mix of gesso and matte medium. To start, pour the gesso into a small container. You will need a condiment container or small disposable cup for this task. Add about 50% gesso and 50% matte medium. The matte medium will help to thin the gesso, allowing it to be applied more smoothly while also ensuring that the surface is perfect for sketching.

Step 4: Stirring the Mixture

Once you have your gesso and matte medium in your container, stir the mixture thoroughly with an old brush or a stirring stick. The goal is to ensure that the two components blend together to form a smooth and consistent mixture. A 50/50 ratio works well, but feel free to adjust depending on the desired consistency. The matte medium will not only improve the application of the gesso but also create an ideal surface for sketching, allowing your colored pencils to adhere better.

Step 5: Applying the Gesso Mixture

Now it’s time to apply the gesso mixture to your canvas. Using a brush, evenly coat the surface with the gesso. Work in smooth, gentle strokes to cover the entire canvas. You should aim for an even layer that is not too thick or thin. Be sure to cover the edges of the canvas as well. Once applied, allow the gesso to dry completely before proceeding to the next steps of your painting process.

Properly prepping your canvas is a fundamental step in achieving a high-quality portrait painting. With the right techniques, such as checking for squareness, fixing wrinkles, and applying a smooth gesso layer, you are setting yourself up for success. By following these steps, you can ensure that your painting will have a strong foundation for detailed and accurate portrait work.

In this first lesson, we have set the stage for an exciting and rewarding painting experience. As you progress through this Winter Acrylic Portrait Challenge, continue to refer back to these preparation steps for each new portrait you tackle. With every layer and brushstroke, your painting will come to life, and you’ll be proud of the portrait you’ve created. Keep practicing, and don’t hesitate to ask for support from the community together, we can achieve beautiful portraits!

By prepping your canvas properly, you are taking the first step toward a successful portrait painting. Join us for the full Winter Acrylic Portrait Challenge and start creating the portrait of your dreams today! Pre-Lesson: Gathering Supplies

To know more watch my video tutorial below.