The fourth factor to consider when choosing visual communication techniques is your design principles. How are you going to make your visuals attractive, coherent, and effective? What are the best practices for choosing colors, fonts, shapes, images, and layouts? How are you going to balance the elements of contrast, alignment, repetition, and proximity? Depending on your design principles, you may need to follow some guidelines and avoid some pitfalls when creating your visuals. For example, if you want to make your visuals attractive, you may need to use colors that match your brand identity, fonts that suit your tone, and images that evoke emotions. If you want to make your visuals coherent, you may need to use consistent styles, themes, and formats across your visuals. If you want to make your visuals effective, you may need to use visuals that complement your message, highlight the key points, and simplify the complex.