Almost every artist or person interested in art has experienced this problem. You have a spark of inspiration, almost out of nowhere. A great, subjectively groundbreaking idea comes to you and you’re left with an image in your mind of surely the best thing you will ever create in your life. There’s a catch, though, to this explosion of creativity – you have no idea how to even begin drawing this thing, and when you try, it doesn’t come out at all how you expected it to. This problem, for me, lasted an immense amount of time and dealt with drawing people performing simple tasks. Now that I’m past this problem, I’m going to explain how to draw action scenes.
Before you begin drawing any type of action scene, whether the subject is somebody eating a sandwich or skydiving, you need to have, at least, a basic grip on human anatomy. I can’t emphasize enough how important this is, and how often it’s overlooked. You can find books about anatomy in any library, and diagrams on the Internet. A good way to draw anatomically correct people is to separate the body into eight parts – the torso, arms, hands, legs, feet, head, and neck. This creates guidelines for you to follow when drawing the body, like when you’re drawing a star; if you draw it all at once, without separating it into parts, it doesn’t usually come out as you intend. Areas that are supposed to correspond are larger or smaller than each other, and this is what happens without a proper understanding of anatomic placement.
A few more notes about anatomy - it’s good to keep in mind that proportions may vary depending on the sex of the person you’re drawing. For example, males have larger hands than females, broader shoulders, larger and longer chests, and larger feet. Females have longer legs, more curves, and often softer facial features. Perspective is going to affect the proportions. If somebody has their arm behind them, that arm’s hand is going to be much smaller than the hand that’s not behind them; if...