You are all funny with your defination of P.lol.
Hiya Volante
Well i use auto alot. Specially on my frog shots.
Water shots i pefer shutterspeed priority and apperature.
Portraits i use apperature priority.
In other words whatever gives you the best results. Sounds like you doing great anyway.Practice makes perfect. But i always shoot in raw mode.

I noticed no one has answered 2.
That is so hard to put a price on your work. My teacher told me to charge 100 dollars an hour for my work. That is Aussie dollars. But i found that so hard to do. Depends on subject eg wedding.

Also dont forget copyright of your photos. They paying for that?

Hope i have been on a little assistance.
P stands for perfection.hehe.
Chris