I think another thing that would be useful is to take notes of what you do.
That way you keep track of everything and can refer back. I'm talking mostly of in the darkroom but it could also be out in the field.
With careful notes of your preceedures you can try new things and still go back to you tried and true. Also with notes you can delve into areas that you don't feel confortable with and experiment and later ask questions about where you may have gone wrong, without trying to remember each step you took.
Your advice is great and it sort of mirrors my own experience.