Some other things you missed.
Ok. If you're going for a near-literal clone, you missed the mark a bit. Add some sound.
When you eat a power pellet, add a squiggly line to the ghost's mouth.
Scores should appear when special things happen-you eat a ghost, fruit, etc. Also, the score should be at the top.
Pac-man should spin around and dissapear when he dies.
The lives were represented as more Pac-men in the corner.
How about the 6-second-or-so pause each maze started out with? Make sure it still works when you die!
Also, I noticed an error where the green ghost would disappear for a short period of time.