Cut the material for either (or both) projects on your Cricut machine. See the video for how I designed my project with a heart around it and text. For vinyl, cut with the material good side up. For heat transfer vinyl, cut with the material good side down and mirror before cutting.
For the vinyl to add to a cup, weed away all of the excess vinyl with your weeding tools.
Then add all of your colors to one sheet of transfer tape. You can see more about the basics of working with vinyl here.
Adhere the vinyl to the tumbler and burnish it down well. Then remove the transfer tape to reveal your design.
For the shirt, weed away all of the excess from your heat transfer vinyl using the weeding tools.
Then add your colors one at a time to the shirt surface. Be sure to follow the instructions for the brand of heat transfer vinyl you are using for both time and temperature. Remove the carrier sheet for the first color.
Add additional colors to your design. Just be sure your first color is covered when pressing your second (or third).
Remove the carrier sheet from the heat transfer vinyl and your shirt is complete.