Thank you that is very helpful Kayleigh! I must just have something odd with the texture I was trying to use on the second collar test. Earlier on, I created a test with a little hole in the middle and it is just about where your little spot is on your pix!!
(trying to insert image here)
http://farm8.staticflickr.com/7426/9248464553_4ebde9aa2c.jpg[/img]
(if image insert doesn't work, picture of successful collar with clear middle and edges is here!
http://www.flickr.com/photos/79324043@N07/9248464553/ )
I am motivated now to try again, now that I know there is a pattern!! Thanks again!!