I based the first one on a tutorial I found online that had a really nice looking brown and gold color scheme. Instead of following the tutorial exactly (I always try to put my own spin them), I used the background shapes as my objects in the exercise.
The next one wasn't connected with this week's exercise. I just had an idea I wanted to try and managed to get it wrapped up today. Tomorrow, I'll post examples of this week's design principle that I found across the web. I managed to locate some really nice retro album covers among other pieces.