While in the test fit editor, click the “Explore in 3D” button in the upper right corner. If this is the first time you have opened the layout in 3D, you will be given different styles to choose from, which will apply finishes and color to your layout.
After selecting a style, your plan will load in an overhead view. To drop into your layout, double click anywhere on the plan and you will automatically drop into 3D at eye-level. To exit 3D mode and return to the editor, click the "Exit 3D" button in the upper right corner.
To learn more about navigating in 3D, check out the other articles available covering this section.