Write a script for the comic book you want to put together. It should contain a complete story or chapter, and include a breakdown of all of the action and dialogue that takes place on each page. Comic books usually have 32 or 64 pages, though you can make yours as long or short as you wish. Most people think of superheroes or adventure figures when they imagine comic books. But you could also write a script based around a family activity, like a visit to an amusement park or a holiday get-together. (In such cases, you may need to switch steps 1 and 2.)
Take pictures corresponding to the script you have written. Make sure you get good shots for each panel that you intend to use in your comic--multiple shots of each panel if necessary. Your script will help in ensuring you get everything you need. If you're telling a superhero or adventure story, you'll need people to serve as actors and you'll likely want some costumes and/or sets as well. If you base your comic around a more impromptu activity, such as a family outing, then swap steps 1 and 2; just take lots of pictures and worry about arranging them into a story later.
Download your pictures onto your computer in a format that your drawing software can read (jpeg or PDF file formats are typical).
Open your drawing software--either a program such as Adobe Photoshop or a comic-specific program like Comic Book Creator. Begin assembling your pages for your comic book, based on the script you've written. Comic books are usually formatted 11 inches wide by 17 inches tall. Each page should contain enough panels to hold the action--four to eight is typical, but you can add more or use fewer. Each panel should be bordered by a thin black line (half an inch or less) and there should be a uniform amount of white space (one-eighth of an inch wide or so) between each panel.
Add the pictures to your panels in the drawing program, arranging them in order so that the narrative flows from one panel to the next.
Insert word balloons, thought bubbles and narrative boxes to complete the story. You can also add sound effects of the "Biff! Pow!" variety, if appropriate. Narrative boxes can be placed alongside their appropriate panels and help bridge the gap between one picture and the next. Word balloons and thought balloons should be placed above the character doing the talking or thinking. Take care that none of these additional elements covers up the action in the photos beneath them.
Proofread your comic to correct any grammatical errors and ensure that everything is the way you want it. Then print it out for you and your family to enjoy.