You have the ability to take whatever is in your computer, print it out, and then apply it to another surface. The surface can be white, and your image will be pretty true to your original, or you can have a painted surface underneath, and that will change the nature of what comes through. But you can almost always count on something going wrong, either something won't transfer completely, or you will have forgotten to change it to mirror image in the computer, or part of the image will transfer and part won't(always, of course, the parts that matter the most being what's not left behind). Because the transfers are so tricky, I've become obsessed with them. I'm constantly trying to find the perfect, least labor intensive method of making the transfers. Like a true scientist, I'm continually trying different papers--writing to companies and asking for samples, ordering what I think might work from EBay or Amazon, even (I know this is hard to believe) taking and keeping notes.
However, this seems to be part of the dance, that it's risky and scary, and that you mostly don't know whats going to happen. When you peel or pull away the backing material you have something that may be the most wonderful thing you've ever seen, or just bad--but a good dance nonetheless.