No silly, not your own art, showcase artwork from artists you admire, and explain what makes them so good! For example, I love this artist called Bryan Saunders, who was also featured in The Guardian this weekend. He draws a portrait of himself every day, racking up to an admirable total of over 800 portraits altogether. His work is very obscure, yet very famous; what makes him so popular is his portraits he did whilst high. Yup, on drugs such as Marijuana, Crystal Meth, Cocaine, the whole work:
I find this amazing, but it's obviously very controversial.
Another artist I'm fond of is Jason De Graaf, who photographs:
The detail which goes into making that painting look so realistic is just outstanding. The highlights, the textures, everything.