Your vinyl is not sticking to your transfer tape.
Cricut vinyl will not release from transfer tape.
Unfortunately it would not release the cut out letters when applied to the surface because it is extremely sticky.
Opened new roll cricut transfer tape stuck my vinyl to it and it will not release vinyl to anything thought it was a faulty roll and opened my second new roll.
Purchased 2 rolls and cut out some inch vinyl letters and applied the transfer tape and it is very easy to align since it is clear.
Using scissors to clip through your transfer tape but not your vinyl can help you to avoid bubbles and folds.
You create a decal but when you go to pick it up with the transfer tape the vinyl refuses to release from the backing paper.
Second roll same problem tried the carpet jean ideas and still will not release from cricut transfer tape.
This specially designed transfer tape is made for most vinyl types including premium vinyl patterned holographic holographic sparkle metallic matte metallic and many more.
Use it to create custom made media covers personalized labels unique decor and so more.
You create a decal but only some of the letters stick onto the transfer tape while the rest are left behind on the backing paper.
Snipping through the transfer tape between the pieces of vinyl allowed me to more easily curve the decal around the mug.