azzaman333
meh
I can answer this question wrt to my feet. I'm right footed and used to absolutely suck at using my left foot for kicking a ball, but during practice I would just.. try using it.. Over and over and over.. Eventually you become decent at it and can use it for simple passes or shots, if the situation calls for it. I bet that if I did the same thing with my left hand and a pen, I'd get decent at it after a couple months of mediocre occasional practice.
My left foot shots are like my right foot shots, wildly unpredictable. The only difference is I have no power on my left.