Important thing about making comics - realism is secondary. The important thing is selling the pose. You'll need to exaggerate the poses as well as the expressions and camera angles in order to make the panels more interesting. Layout is important, so do quick sketches on paper of how you think the panels will play out. Use stick figures if you feel you can't draw, as these are just to get ideas and mood nailed.

If you look at comics, you'll see the majority of books don't aim for realism so much as they aim for believability. Establish the scene, establish the character, establish the mood. These things are more important than trying to mimic realism when dealing with comics.