The different roles have to be thought out. Each character has to be distinctly recognizable from each other and a size and shape relationship has to be set. And each character should be credible, realistic and alive. Gestures and poses must be appropriate for every character role. Next, consider Pictorial Composition .
Composition is the most important element in an illustration.
It is how to put all the elements in drawing together to present a clear, cohesive idea that conveys the intended message and evokes the appropriate reaction from the viewer. If all the other elements are executed superbly and fail in the composition, all is for naught. Every scene should be interesting. One central dominating focus. Evoke the desired response from the reader.