Choose or draw a design to print on the t-shirt. Print or draw this design onto an A4 size sheet of acetate.
Place thick cardboard under your work area. Using a craft knife, cut out the areas of your design that you want to print. This cut-out design is your stencil.
Press the t-shirt to remove any wrinkles or creases on the area you intend to print. Lay the t-shirt flat on your work surface. Insert cardboard between the two layers of the t-shirt, under the area on which you are going to print. This will stop the ink from bleeding through both layers of the material during the printing stage.
Place the stencil on top of the t-shirt. Lower the screen on top of the stencil. Apply masking tape to any areas on the underside of the screen that are not covered by the acetate stencil.
Put a small amount of ink along the top of the screen. Pull the ink down the screen with a squeegee held at a 45-degree angle.
Lift the screen off the t-shirt from left to right. The stencil will come away with the screen leaving the printed t-shirt. Allow the shirt to dry. Wash the stencil, squeegee and screen in water to remove the ink.