I often go over this with my Art 206 (Graphic Novel Illustration) students, but I thought it might be of interest to the general public. This is just about the creation of a page of comic art. It has nothing to do with writing the story or that end of it. Though I will say that had to come first. If you don't have a story, then you don't have a comic. Got it? Okay, then...Step 1 is thumbnailing the page out. There is no "winging it" in comics. You have to figure out your layout and pacing before your pencil touches the Bristol board. I use letter-sized sheets with a comics grid that I print out from my laptop:
Once the entire chapter (or sometimes the entire comic book) is thumbnailed out, then it is time to get out the 11" x 17" Bristol board. Bristol board is a stiffer version of cardstock and can be found in any art store. I prefer using Bristol board that has the image area and panels measurements printed on it in blueline.
The next step is to start inking it. I ink digitally using Adobe Photoshop and a Wacom tablet and stylus. It is very important to make sure that your tablet is calibrated for pressure so your digital ink line isn't what we call a "dead line". A dead line is one that is the same width in the beginning, middle and end. The ink lines need to taper on the ends. It's also important to plan ahead for color and special effects. In this case I waited on drawing the column of light, because that would be drawn in color. I also created a separate layer to draw the floating Spaniard head on. That's because I wanted it to be sort of transparent. You can do this by taking the opacity of that particular layer down. You can also see some of the minor changes and corrections I made in the inking.
Once the inking is done, then you start adding color. In comics you do this by "color flatting". What is color-flatting? Color flatting is adding areas of flat color with no shading or toning. This is done using the pencil tool in Adobe Photoshop and not a brush tool. That is so you can use the paint bucket tool to easily switch out colors if you wish. The color should be on a separate layer underneath the ink layer. That is so the kind of pixelly pencil lines of your color areas are covered by the ink lines. Once the color-flatting is done then you can go in and add shaded areas and highlight (also on a separate layer).
Another important thing to keep in mind and you color a page is color balance. Using color to draw the viewer's eye across the page. You can also see here that the light column is purely color with no outlines. I prefer to depict elements like air, fire or water with pure color and not outlined in black.
Lettering is the next stage. But before you start adding your dialogue and word balloons you need to size it down to actual comic book page size. Most comic book printing companies have templates available for free download at their websites. The typical comic book page is 7.5" x 10". If you fail to size your page down beforehand you run the risk of having your letters be a weird size and possibly too small to read. Once the page is sized down, I open it up in Adobe Illustrator. Pro tip: if your script is done in Microsoft Word you can just copy and paste the text into text boxes. It save re-typing your entire script. Each block of text should be separate so you can move them around a little for best placement. Once that is done, use the ellipse tool to create word balloons around your text. To create a tail, I use the polygon tool to make a triangle and then use the direct select tool to make the tail point to the character's mouth.
And that's about it. Remember that you always want to have editable versions of your pages available for things like color changes and lettering fixes. Once you have completed this process 24 more times, then you have a comic book! Double or triple that and you have a graphic novel!