OK, I did all of them, and I'll post pictures soon, but I tried "too hard". I was done with the last once (I did 8 total) and then decided that a couple corners could use a bit more heat. So, instead of putting the parchment paper over the entire iron-on, I tore it into pieces just to do the corners (so that I could do all three shirts and a time and save on cooling time). Of couse, I didn't think what would happen if the iron touched some of the iron-on's not covered by parchment paper. But now I know what happens - you melt your iron-on into nothing. So, I ruined 3 shirts after it was all said and done. So- off to buy more matching tshirts, more paper from ebay, print and trim them all again, and they try to be more careful next time...
This is getting expensive. I should have just left well enough alone...