if you're printing right on the fabric (which I would suggest) you don't need to do a mirror image. You can either go buy the kit at Joanns (June Taylor has a kit) or you can iron a piece of fabric (same size at paper in printer) onto freezer paper and it will go thru your printer. Let it dry then hit it with an iron to set the ink. There are alot of tutorials on youtube. I think they will fade if you put them in the dryer. I did iron on transfers to a wall hanging at least 15 years ago and they haven't faded at all