I donated my cake services to a silent auction at work last month. The highest bidder paid $55 for a cake. Woo hoo! And through the auction I got a cake order! One of my co-workers wanted a cake in the shape of a human heart with a knife in it. A lovely way to tell someone happy birthday! haha
A knife in a cake, I've done before. A cake human heart-shaped cake, I haven't. I ended up using a football-shaped pan and just cut it a little. I think it turned out good! Oh, and I used piping gel for the dripping blood.