One of the hardest parts about painting the walls of your home is ensuring that the lines are straight, even, and crisp. Especially where the wall meets the ceiling. I swear, it seems nearly impossible every time. After all, no one wants something that is uneven and looks sloppy. But believe it or not, there’s a foolproof method that will give you a clean, straight line every time. Keep reading to see the best way to paint a straight line.