(outlet in lower left for scale)
It's a copy of Matisse's Le Gerbe:

To make the mural, I drew a grid over a picture of the original, scaled my grid up on colored card stock, cut out each piece with an x-acto knife, and stuck the pieces to the wall with removable poster tape. Hopefully, the poster tape will come off the wall when I move out. You can see that I changed some colors based on the card stock I had available.
Here's the wall before we moved in:
The whole living room (next project: slipcover for the beige sofa):
At an angle:
Close-up to show paper:
I had to cut out a hole for the outlet:
The total cost was less than $20 for the card stock and the poster tape. Now I just have to figure out what to do with our other blank walls.






















