If you will look again at the Layers tab of the Fractal Properties tool window, you will see both your layers and their tiny thumbnails listed.

But when you look at your image, you only see the top, grayscale layer. This is because the top layer is 100% visible in “Normal” merge mode, which means that you will not see any layers underneath it.

To check that the other layer is still really there, click the Visible icon on the Layer 1 layer.

This toggles this layer’s visibility off and on. When the visibility is off, you will see the layer(s) underneath. When it is on, you will see the active layer.

Having multiple layers in our image is useless, though, unless we can see more than one at a time. There are many ways to do this, so let’s work through them one at a time.

At the top of the Layers tab there are two controls. The one on the left is the Merge Mode setting (which currently says “Normal”) and to its right is a horizontal slider (currently all the way to the right at 100%).

• Make sure the top layer of your fractal (Layer 1) is visible again. With the top layer highlighted in the layer list, click and drag the Opacity slider slowly to the left and watch what happens to your fractal.

As the top layer becomes more transparent, the bottom (Background) layer begins to show through. When the Opacity slider is all the way to the left, at 0%, the top layer is no longer visible at all.