I always shoot in Manual Mode, with the fixed ISO and focal ratio.
The picture is shot at ISO 800, f/5.0, 1/100. I normally never change this settings. The only thing I change is the shutter speed, depending on the light inflow.
I do not have the luxury of transferring and checking on the pictures right away. When I downloaded these pictures after a day, I noticed that this closeup picture was dull.
So I use Picasa to do Fill Light and Hightlight.
While other advanced tools gives us more options, I have felt I am much more comfortable using Picasa.
Do share if you have any other useful tool for this.