Today I made a mirror

Today I made a mirror by following a tutorial I got from CGTutorials. One problem I had today was that I made the ground reflective like the vertical plane. I must have selected both of the planes when I only wanted to select the vertical plane.

Another problem I had today was that I did not save my work. I ended up erasing my scene when I selected open instead of append from the file menu. I did not realize my mistake until I had opened a new scene in the 3d view. I though oh no I did not save my work. So I had to do my model over again, but that is OK because it came out better the second time.