To install shower curtain liner in your small bathroom, you must first measure the height of your bathroom and for that, you need to take accurate measurements of your curtain. Then after that, you must maintain 2 inches of space between the floor and the curtain so that it can soak up all the moisture and keep your room clean and dry. Then, you must set the curtain rod and for that rotate it in the clockwise direction so that its length gets increased. Then install it to the marked location and you can also make use of the level to ensure that the rod is straight mounted. Then the last step is to hand in your shower curtain and for this, you need to check the hardware first as it is going to be permanently set there so you need to be extra careful.