Having trouble coming up with something to draw? No worries - while you'll eventually learn how to start from a tiny seed of a thought and gradually nurture it into a complex concept to explore through design and illustration, it's perfectly fine not to be there just yet.
For now though, here's an idea that might interest you.
Sure, you've got your noble heroes, and your dastardly villains... but they can't be like that all the time. It would be exhausting!
Pick a traditionally grandiose character - either of a species associated with "the bad guys" or a major villain themselves, or something known to be holier-than-thou and morally unblemished - and show us a bit about their home life. Their family, their loved ones. How do they behave when they're most vulnerable?
Bonus points for making us laugh!
Disclaimer: There are no bonus points. I ate them all.
Cottonwood Arts Sketchbooks
These are my favourite sketchbooks, hands down. Move aside Moleskine, you overpriced gimmick. These sketchbooks are made by entertainment industry professionals down in Los Angeles, with concept artists in mind. They have a wide variety of sketchbooks, such as toned sketchbooks that let you work both towards light and towards dark values, as well as books where every second sheet is a semitransparent vellum.