What you need:
Reynolds Freezer Paper
Blank T shirt
Iron and ironing board
Self healing mat
Stiff sponge brush
How to do it:
Once you have your image printed out, you will need to trace it onto the matte side of the freezer paper.
When you are done tracing, it's time to cut out your stencil. Use your exactly knife to cut on the lines you traced. Keep all the little pieces you cut out, you might need them in a minute.
Next, place the stencil on your shirt, shiny side down, where you want it. Use any of the cutout pieces for details if needed (like the inner cutout of letters). Make sure this is where you want it. With your iron on the cotton setting, lay your iron down in the center of your stencil. Then pick it up and lay in down all around the outside (this way you don't move the stencil if you rub the iron over it.)
Make sure your freezer paper is secure on all the edges you are going to paint over so you don't have any weird edges where the paint bled under. Now paint! Make sure you get a good even coverage of paint. Pay special attention to your edges so they come out even.