Here are some pictures. It is very simple to make. I just tied a loop on the quiver, which I made out of leather so that it looked more traditional on my bow. Then I bought two different weights of rope at Lowes. One heavy piece about 20" long that will go over my shoulder and two thinner pieces, about 3' in length. I made lymans climbing rope knots so that I could change the lenth of the strap(you will see in the pictures). You can used any clips you can find to attach the strap to your leather straps attached to your bow.
here are some pictures:
The leather straps on my bow:
Here is the strap fully extended:
Here is the strap shortned up a bit.:
Here is the strap how I have been wearing it:
Sorry about the photo quality, the pictures were taking with my cell phone