Print out the graphic you want for the shirt. I chose to use a silhoutte of Texas, and printed out 3 sizes to see which one looked best on the shirts.
With the graphic taped down, place a sheet of freezer paper on top with the shiny side down and trace the image with a pencil. Then with the x-acto knife carefully cut out the shape. Make sure to leave a large border of freezer paper around the graphic so you have room to add paint and so it does not get on the shirt.
Once the shape is cut out, place the freezer paper shiny side down on the shirt. (It’s best to iron the shirt first to get out all the wrinkles.) Really press down on the edges to make sure it is firmly on the shirt.
Take a picture of your son letting you know he is #1.