Yeah, a lot is trial and error. Trust me, I have several jig boxes full of my first ties that I will probably will never use. They will probably catch just as much fish as my last ones, but to me, they are inferior. Too long body, not enough tail, too much tail, thread over the body, too small eyes, ect. A lot of people here, and a lot of people on TFF helped me learn. Best way to learn is post pictures and ask questions. Another good way is to join jig swaps and see other peoples work. You get ideas and new techniques to ask "How did you do that? That's how I learned last summer. One thing Skip helped me on was to not trim the tips of the marabou and to pull it off the stems.