imagination goes on

This is a poster I just found from internet ,at first I was just go caught by its beautiful rainbow colors ,then I realized ----WOW this is an airplane .What a smart design!Many posters, particularly early posters, were used for advertising products. Posters continue to be used for this purpose, with posters advertising films, music (both concerts and recorded albums), comic books, and travel destinations being particularly notable examples.What is the most important thing for poster design?I think it is imagination.You can learn skills of using computer to design from your school,but you can never LEARN imagination.A good poster is not full of high-level drawing skills ,but simple funny ideas ... just like this colorful airplane.It makes customers feel happy and safety.