A good tip for using napkins is to separate the layers (they usually have two or three) and use only the top (printed) layer. This will be quite thin, and almost impossible to put glue on without tearing it, so put the glue on the base card instead and gently smooth the napkin over it. (A Xyron machine is perfect for this if you have one.)
As usual, there's a fantastic prize on offer this month!
So if you'd like to be in with a chance of winning the goodies, check out the samples by my talented teamies on the Challenge Blog, and get those entries in! Can't wait to see them!