Palette Knife Watercolor Techniques for Stunning Texture Effects

Are you looking to try something fun and a little different in your watercolor journey?

As Kate Miles Art often shows, experimenting with new tools can open up a whole new world of texture and expression.

In this tutorial, Kate Miles Art will guide you through how to use a palette knife to create amazing textures and effects in watercolor painting.

This easy-to-follow lesson is packed with ideas she has tested herself, and you’ll see just how enjoyable it can be to shake things up with this surprisingly versatile tool.

Getting Started with The Artist’s Palette Knife and Watercolor Tools

Before beginning, the artist walks through the supplies used in this tutorial:

• Watercolor set: The artist uses the Winsor & Newton Cotman fieldset, along with tube paints: Payne’s Gray, Burnt Umber, and Purple Lake.
• Palette knives: The artist uses a small one and some with textured edges.
• Spray bottle: For spreading and activating watercolor paint.
• Watercolor paper: Cold-pressed or rough texture works great.
• Brush and water container: To wet the paper and clean the tools.
• Paper towel or rag: To blot and control moisture.

Now that everything is set up, let’s explore different ways the artist uses the palette knife with watercolor.

Technique 1: Wet-on-Dry Application with a Palette Knife

This is the first method the artist tried with the palette knife, and it instantly became a favorite. The artist starts by squeezing out some paint into the palette.

Then the artist uses a small palette knife to apply thick paint directly onto dry paper. This is perfect for adding bold, textured lines, especially if suggesting things like tree trunks or twigs.

Just a tiny bit of paint on the knife goes a long way. When the artist drags the knife across the paper, it behaves much like acrylic paint, creating rough textures and impasto-style blobs.

The artist can use the flat edge of the knife or the tip to make different types of lines and strokes.

Want to get more creative? The artist tries palette knives with textured edges. They allow for even more unique marks—playful and experimental.

Try palette knives with textured edges

To explore how watercolor reacts, the artist sprays a bit of water over this section—five sprays to keep it consistent.

The pigment spreads—just enough to be interesting but not so much that it loses definition. This is the magic of wet-on-dry + spray.

Technique 2: Wet-on-Wet Palette Knife Application

Now, let’s see what happens when the artist switches to wet-on-wet. The artist saturates the paper first with clean water using a brush.

Once it’s moist and ready, the artist loads the knife again with paint and applies it the same way.

Right away, the paint disperses much faster. It softens and spreads, but texture still appears in certain areas.

When the artist adds thicker blobs and rubs them out a bit, it creates a softer blend, but the texture isn’t completely lost. It behaves very differently from wet-on-dry, which makes this technique so fun.

Technique 3: Scraping into Wet Paint for Texture

Next, the artist plays around with scraping—a fun way to expose white paper underneath or create darker creases.

First, the artist loads the palette knife with tube paint and applies a solid coat to a new area. Then, using the knife’s edge, the artist scrapes across the wet paint.

It’s a technique borrowed from acrylic painting but works beautifully in watercolor, too.

The artist can also scrape after using diluted pan paint. In this case, when scraping into damp paint, pigment settles into the grooves created, making those areas darker.

The result is a rich, textured look that feels both layered and organic.

The artist controls whether the texture becomes lighter or darker depending on when and how the scraping is done. Watching it dry is incredibly satisfying.

Technique 4: Palette Knife Mark Making with Liquid Paint

Now comes one of the most playful parts—mark-making. Here, the artist treats watercolor like stamp ink. The artist mixes a good puddle of color in the palette and dips the palette knife right into it.

Then, the artist stamps the knife onto the paper. This isn’t limited to palette knives—anything can stamp! But palette knives leave a sharp, clean edge that’s fun to explore.

The artist starts with Purple Lake, then switches to Burnt Umber, adding water to loosen it. Using both colors creates layered marks with more rhythm and complexity.

Even when switching to a flatter palette knife, the artist can still create lines—less textured than thick tube paint, but still expressive and controlled.

At one point, the artist even adds a light wash, then places a darker color into it with the palette knife. The paint spreads and dissolves slowly, behaving differently than with a brush while still offering unique edges.

This combination gives freedom to explore soft transitions and unexpected blends.

Technique 5: Blending Brush and Knife Techniques

Now things get even more exciting. The artist combines both tools to create a loose rainbow effect.

The artist loads thick paint—Payne’s Gray, Burnt Umber, Purple Lake—directly onto the palette knife without premixing. The artist lets the thick colors sit on the paper in layers.

Next, the artist wets the paper below the paint using a clean brush. Then gently pulls the brush into the painted section, adding water and nudging the colors downward. The pigment flows and blends beautifully—each color bleeding into the next without becoming muddy

With just three colors, the artist creates a rich, moody rainbow. The artist even adds extra water in certain spots to help it spread further.

The effect is stunning—purely from letting pigment and water do what they naturally do.

Final Result: What Dried Palette Knife Watercolor Looks Like

Once everything dries, the artist steps back and takes a closer look.

The rainbow section is vibrant and soft, with rich blacks where the paint pooled. Hard to believe no black paint was used—just a deep blend of the colors.

The wet-on-dry section holds its shape better than the wet-on-wet, especially with tree trunks. There’s more definition and texture where dry paint and spray were used.

Wet-on-wet gives a looser feel, but the structure gets lost more easily.

The mark-making and stamping adds so much character. Each shape has a different rhythm and vibe. 

Finally, the scraping sections show how much contrast and texture appear just by dragging the knife through wet paint.

If the artist loves expressive techniques or wants to break away from traditional brushwork, palette knives offer countless fun and unexpected possibilities in watercolor.

Final Thoughts

Which palette knife technique does the artist want to try first? Whether it’s scraping, stamping, or blending thick paint, there’s something here to spark creativity.

The artist shouldn’t be afraid to experiment—surprising discoveries often come from play. The artist can share favorite results anytime!