The lines on the head of your putter effect your aim, no lines aims up right, a top line a little more left, a bottom line more left and three lines the most to the left
Learn consistency and ball control by always aiming at specific targets when you are on the practice range, but do not just aim at the target, use the entire target area, aim to the left, right, short and long and develop that control to hit more fairways and greens than you ever imagined
Encourage your kids to play golf by taking them with you when you play and practice and consider getting them an instructor once they get older and stop listening to you