To ensure your sign is visually appealing and effective, consider several factors. Firstly, choose a font that suits the message and purpose of the sign. Secondly, pay attention to the font size and spacing to ensure readability.  Thirdly, consider the contrast between the font and background color to maximize visibility. Lastly, keep the message concise and clear, focusing on key information and avoiding clutter. Remember, a well-designed sign can capture attention and convey the message effectively.