I can't believe I was mentioned in the CHIRP Cricut Newsletter.
Here is the link to the post that was referenced there.
I made this with the heat transfer vinyl. I buy mine at H&H sign supply. They have some great colors. I've used all of the brands they carry. This particular shirt is made with the Siser.
Easy directions - make sure to flip any designs you do - the iron on vinyl you do in reverse. Also see my blog entry on setting up text for iron on. Cut and weed your design, then once placed on, I use parchment paper over it. On the cotton setting of your iron, place iron firmly on the decal - hold and press hard a full 6-8 seconds, then gently start moving the iron around for about 15 more seconds. Most iron on vinyl is cold peel, so wait at least 45-60 seconds before puling off the backing. (always follow the directions according to the specific vinyl you use). Then you're done! Wash and dry normally.
1. I don't do this on very humid days
2. wash and iron your garment before doing this
3. It is hard to start the weeding of the vinyl - use a fork or craft knife and just nick the corner of where you are trying to weed, it makes starting the weeding easier