Study the "Star Wars" universe and familiarize yourself with its environs. While you can certainly tell a story utilizing the characters from the films--perhaps one of Anakin and Obi Wan's adventures during the Clone Wars or Han Solo's travels before he joined the Alliance--the timeline encompasses thousands of years and countless possible tales It might be just as much fun to develop your own characters and detail their adventures in your comic book as choose characters from the movies.
Take a close look at comic books and the way they're put together. Notice how the panels of each page move the action forward and the way they visualize the tale for their readers. You need to know how they're put together if you want to tell a story with them.
Draw up sketches of your major characters and prepare their "look" for the comic book. If you have artistic skills, you can do this yourself. Otherwise, you may wish to team up with an artist and let him set up the look.
Decide how many pages you want your comic book to be. Traditional comics used 32 or 64 pages to tell their stories (including ads), but you can make it as long or as short as you wish. If you're going to print this with professional printers, ask them how many pages they require and how big each page must be.
Write a script of your comic book story, including a brief description of the art in each panel and dialogue the characters will speak. Make sure the dialogue is sparse enough to fit in each frame without crowding out the imagery, and that each page flows smoothly into the next.
Revise the script, adjusting elements as necessary until if fits into your chosen parameters and feels as strong as you can make it. You may wish to let friends or editors take a look and offer constructive criticism.
Prepare pencil sketches of each page, covering all of the panels and attendant action therein. Use your script as a guideline to setting up the images. Make sure you include dialogue balloons to hold all of the words.
Ink the penciled images of each page, rendering the action in black and white. Once something is inked it's more or less permanent, so make sure the images are the way you want them before beginning this step.
Color the pages in, either by using paints and markers by hand or scanning the ink drawings into a computer and applying a software program such as Photoshop. (You can also use specific comic book software like Comic Book Creator.)
Add the dialogue into all of the word balloons, either by hand or using a computer software program set up for the purpose. Edit the dialogue when you're done to make sure there's no mistakes or typos.
Prepare a cover for your comic book. It should make prominent use of the "Star Wars" logo, as well as containing a single image giving some impression of the action contained within.
Print your comic book out on the computer printer, run off color photo copies, or send it to a print-on-demand service to have it bound and published.