Heres a preview of the trick. Dont mind the ending.
In this video, the tape was put on the ceiling rather then behind my ear.
Step 1: First
Start off by getting the supplies that you need. You can get all of this at a magic shop or buy it at any store that may sell it.
1. Woody nylon (invisible thread)
2. Candle wax (Magician Wax)
3. Any light object
4. and tape
Step 2: Now
Take your woody nylon string and at the tip, you will have to try and gently pull out a small strand. (the string has about 100 strand all put together) Pulling out one should be pretty easy.
Step 3: Almost Done
When the small strand is removed, Take a piece of the magician wax and put it on one end of the string. (it will stick on) Then put a piece of tape on the other end of the small strand of string.
Step 4: Finally
Take the the end with the tape and place it behind your ear where it can't be seen. Then take the end with the wax and place it on the card. Now your ready to have fun.
Step 5: To Make It Clearer
If you are still stuck at a certain part. Here is a very clear video showing how to do it visually. If you like the instructable, please be so kind to rate it.