All you need to do is look up a bunch of artists, ones you like/dislike/inspired by/all begin with the letter J ect. and try to isolate what it is about their style that makes it unique. Just so your not redrawing their pictures, find an object and try to do something with that object in the chosen artists style.
I did all the sketches and finished pieces in A5 and mounted 4 drawings per A3 black card.
Here's some I did earlier.
So those Are the finished ones. Here are the sketches and the way I set out the project.