WAFFLE FLOWER: Background Blender Brush | Greens | Set of 4These brushes are designed for soft circular blending, helping you create backgrounds that are darker in the center and fade out seamlessly toward the edges. Here are three quick tips for getting the best results with your new Background Blenders: Tip 1 Hold it right. These brushes are designed to be held with your thumb on top. It might feel a little different at first, but it gives you better control and makes blending easier. Tip 2 Swirl, dont dab.