Here are the materials that I used to make my version of the shirt.
Then I traced the skull onto the back of the felt . I chose the sticky kind of felt so I didn't have to buy heat and bond since I knew I was going to put some stitches into the felt to hold it onto the shirt. If you aren't going to put stitches around the skull then you will need to use regular felt or material with heat and bond.
I cut out the skull and placed it onto the shirt. Then I went around the skull with the embroidery thread. I used purple but you could use whatever color that you want.
At the end I added the bow so it was a little girly and I didn't have a fabric flower. I really love how it turned out. It's the first crafty thing I have made in a long time. I will post a pic of Emily wearing it when I give it to her. :)