Measure the wall, door swing, walkway, and elevator or stair route before falling for a piece. A quick floor outline with painter’s tape reveals scale better than a screen.
Shop the role
Write the maximum width, depth, and height in your phone notes, then take them shopping. Include a few centimeters of tolerance for uneven walls.
Ask before you buy
Good buying starts with the room’s constraints, which are kinder than returning a beautiful mistake.