The next step is to create a new layer for the stairs.
As with previous steps where new layers were added, the same process must be followed to create a layer for the Stairs.
First, open the Layers Menu.
Second, lock the Fireplace layer since no additional changes have to be made.
Third, press on the Add Layer Button to create a new layer.
Fourth, as before, press on the Edit Button and rename Layer 6 to Stairs.
Lastly, make certain the Stairs layer is selected, then dismiss the Layers Menu by tapping outside of it.