Of course you can't cut the heat transfer material just from that, so I separated the shapes based on their color, reversed the shapes (so important!), and cut it out.
Remove the negative material and iron onto your shirt with a cloth between your heat transfer material and your iron. I layered the different colors, and most times I have no problem with this, but my silver material got a little bubbly. It still looked awesome. He was thrilled with his shirt and wore it all weekend as we celebrated. Happy Birthday bud!