Brittany, I followed what you did, other than I used 350 degrees for 60 seconds as that was what someone else had told me to do before I saw your video. However it melted the black that holds the metal ring. I watched your video (thank you greatly) and see that you didn't leave your ring or black area off the side of the heat press but it didn't melt the black; so can I ask where you got your blanks? Maybe it was the blanks that I got?
I'm so sorry for the delay. I get most of my blanks from Amazon. I would definitely recommend the Teflon paper. I feel like it really helps, but also, I'm not 100% sure if it wouldn't melt again.