Completely new pattern
If you like you can create your own pallet from clean pallet
First you must delete any existing layers. This is be done layer by layer
Click on the plus sign at the bottom of the emty pallet to add new layers.
You now get several options for how you want the first layer of your pattern to be.
After choosing the first layer there are several ways to add new layers if you look at the bar on top of the pallet: Add new layer, Duplicate top layer, Duplicate top layer rotated, Duplicate top layer mirrored vertically, Duplicate top layer mirrored horizontally, and you also have the opportunity to add a shim paper.