TAP, Transfer Artist Paper, is a coated paper that you put in your computer printer and print images onto, then you can cut out the images and iron them onto another surface; fabric, paper etc.
One happy accident I had while transferring images to organza was that if you have fabric underneath the organza the transfer will be printed on the organza as well as the fabric (cotton in my case) underneath. This creates a nice 3D effect.
In the image above I ironed butterfly images onto white organza. The cotton fabric underneath had a piece of printed paper fused to it and was painted a light yellow. The two butterflies on the left were fused onto the organza on top of the cotton fabric. The butterfly on the right was fused on the organza over a different fabric, so that it is a transparent image overlaying the text.