A trout stream is a difficult place to take photos. David, Adam Beal, and several others here take some beautiful photos. Learning how to manipulate photos in a computer programs will improve some aspects of your photography, but the old tried and true methods of taking lots of photos, keeping a log, and devoting time and effort to the craft will make you better. Make sure your photographs are in focus. No computer program can correct that
Point and shoot cameras definitely have some limitations when compared to a DSLR, but with a little practice and trial and error some of their short comings can be overcome.