Tyla,
Dont put purse net rings on the ends of your net or stakes.You should have a knot formed through your last selvedge mesh on the end of your net, on the bottom and top line.Undo this knot, which should be a double overhand knot. Pull the line through so you have approx 4ft of loose line, top and bottom, Both ends of your net. Re tie selvedge knot. Then pass top line through the circle in your end pin, then tie this line to the other line, this enables the end pin to find its own centre on the lines. So looking at your net at the end pin section when set, the bottom line will run parallel