Pink glitter vinyl on a black shirt. My test shirt did not go well. The lettering looked good, it was lined up perfectly.
But the platen on my heat press was nasty (transfer paper residue) from making the mouse pads last year and I'd never cleaned it off. This residue ended up on the shirt. Nothing I did got rid of it, I washed it three times, I even color it with a black Sharpie.
So, I did it again yesterday with a new shirt. Had to cut out new letters, did two sets, then I let the press heat up and spent a half hour with a lined silicone glove and a cleaning rag rubbing the heck out of that platen. I got a lot of crud rubbed off, there wasn't much visible when I was done (it's Teflon coated so I have to be careful when I clean it).
When I pressed the shirt, I made sure to use a sheet of paper coated with silicone. Just in case there was still residue. I'll probably clean the platen the next few times I use it.
Anyway, the shirt? Very happy with it. It will be up in the store next week.
I haven't taken any pictures of it yet, so I'm not sharing it just yet.