Hi Tamra,
Here's some things I would do:
To darken areas that are too light:
Set the clone tool to multiply mode, softest-edge brush, large brush, about 10% opacity. Then sample and start painting on the exact spot you sampled from. You'll be cloning the image on top of itself, but a darker version of it. Clone over and over to build up the effect.
To get rid of spots that are the wrong color:
One of the many ways you could do it would be to get the paintbrush and set it to Color mode. Sample a color that is the desired color, by option-clicking with the paintbrush on the desired color in the image - to make it the foreground color - then paint over the bad-colored spot. The color will change to the color you want but it will keep the same light and dark values because the paintbrush is in Color mode.
You can set modes for tools in the tool options bar.
Stacy Cates