In relation to your own pic and every design ever, learn how to steal ideas from others, past and present, and mix them together with your ideas.
If you want to be really great, steal from things outside of your particular field of study; other disciplines of art and aesthetics.
In my opinion, inspiration is of the highest degree when it is taken from your direct experience of the real world, rather than your interpretation of someone else's experience.
Your imagination is composed of nothing but other people's ideas, learned systems for interpreting symbols and your particular experiences.
You also need to know how to actually draw, and understand form. Learn to convey ideas through shape, value and color alone.
Also be legible, and use only those things which are absolutely necessary to your core idea.