hi essie, I don't know of a tutorial, but I can outline the steps for you. This is the way I do it (although there are a dozen other ways to make thumbs) 1. Using a square document window (any size) and open the figure/prop you want to use. 2. Apply the textures and render in a new window. Save the render* then either use a new document, or move the camera away from the figure to show a blank screen (or use another camera view). * If you want to add text to your MAT thumbs, save the render as a .psd file and add the text in a graphics app. 3. Import the render as a background image (alt-f-i-b). Open any camera library and add the scene to it. 4. In windows explorer, rename the camera .rsr to match your MAT file, delete the .cm2 file and move the .rsr to the same folder as the MAT file. As I said, there are other ways to do it. Some people render at 91 x 91 and convert the render to .rsr using Poser Explorer, but I frequently add text, so I find this way much easier. And it's easier to do than to explain. mac