There are many uses for painting and palette knives no matter what medium you use. Painting knives are great with acrylics.
Palette Knife Painting Ideas for Beginners - Artful Haven
This is How I Paint with a Palette Knife - My Favourite Palette Knives & Techniques
Creating A Landscape With A Palette Knife Demonstration
Vibrant Oil Finger Paintings by Iris Scott — Colossal
Autumn Aspen Colors Palette Knife Painting by OLena Art - Pixels
Painting and Palette Knives and How To Use Them - Trembeling Art
How a Palette Knife Can Help You Paint
Using Unconventional Painting Tools
Creating A Landscape With A Palette Knife Demonstration