Layers in a project can be reordered. So, for example, if one image layer appears over the top of another image layer, the layers can be swapped so that the image behind now appears in front. Layers can be reordered using the Effects History and Layers panel. Simply drag a layer to a new position in the list.

A layer can be selected by clicking on it in the Effects History and Layers panel. When selected, controls for the layer will appear in the Properties panel. As changes to these properties are made, the results are shown immediately in the canvas viewer.

Some layers provide canvas widgets, which are draggable handles or manipulators that appear in the canvas viewer. For instance, image layers have resizing and rotation handles.

Layer visibility can be toggled by right clicking on the layer and selecting the "Hide Layer" or "Show Layer" menu item.

A layer's opacity determines the overall strength or visibility of the effect.
An opacity of 0% means the layer is completely transparent, and an opacity of 100% means the layer is in full effect.
To edit a layer's opacity, right click on the layer header and select Edit Layer Opacity. Use the dropdown arrow to open a slider window. Drag the slider to change the opacity value. Click anywhere outside of the slider window to close it.
Note: Opacity isn't supported for all layers.

A layer's effect can be selectively applied to different areas of that layer.
This is done by erasing the areas where the layer is not to be applied.
To erase areas of a layer's effect, right click on the layer header and select Erase. A new popup window will appear where the eraser brush options can be modified. Simply draw over the canvas with the brush eraser to set areas where the layer should not be applied. Conversely, select the Restore Brush in the popup window to restore erased areas. To remove all erased areas and restore the image, right click on the eraser icon on the layer header and select Reset Eraser Mask.
Note: Erase isn't supported for all layers.