Hi, Kythas, I am not familiar with your type of holster, however, I was having trouble with my IWB holster moving, too. The reason for it was that my belt size (1"w) was not as large as the loop straps on the holster. I got another belt, this time the same size as my holsters loops (11/2w) and it made all the difference in the world... no more moving. Wildscar mentioned this in his post, also.
I think we do make to big of a deal out of printing. In the beginning we feel like all eyes are on us...their not. Put in on and ware a good outside shirt (black, dark, checkered, strips, etc.) and forget it. You will be fine.
Good Luck
-geo