I subscribe to a graphics service called ClipArt.com, and they have a lot of the Dover Pictorial Archives images. I downloaded several silhouettes today and am practicing. I'm really terrible with the X-Acto knife! I've put in new blades and have tried two different handles, but I don't have the control I'd like. I'm much better with a little pair of scissors I bought for applique, so I'll probably stick with those except for the tiniest inside cuts.
Here are today's papercuts. I particularly like the boy reading. The butterfly was a pain in the backside! I know, I know -- practice makes perfect! (And please don't tell Teddy that I'm raiding his origami paper stash for this!)