Things to think about when drawing:
First - Negative space
This goes into two areas. Take a look at some of Stuart Immonen’s pencils.
And some inked work
And in the samples you posted, take a look how much “blank” or open space there is even in the “busy” panels. This is important in giving the viewer a sense of having a position in relation to the action in and in between the panels.
Secondly, negative space also applies to the silhouette. Even if all the figures were blacked out, you would be able to pretty easily pick out who was who from each panel due to the signature of their silhouettes.
Next, Horizon line and perspective
Take a look at each panel and find the horizon line.
Like most artists, Immonen usually sets the horizon line below the characters’ eye lines. Some artists, like Hitch, will choose to keep the horizon line at the eyeline to contribute to his more “cinematic” or “widescreen” style of storytelling. However, the point is that even when drawing figures, perspective is important and has a subtle effect on the viewer.
Also, perspective in backgrounds tends to guide the eye through the page which is another reason why space in the panels is important. You need space to allow the eye to move through the comic book smoothly like camera movement in movies and television.
Also, obviously, you need space for the damn speech balloons and other text b.s.
Finally, Storytelling - choose your details and focal point
Instead of concentrating on every element in a picture, choose those that are necessary to deliver the story. Some artists have a very distinct technique of establishing the scene or environment in the first panel and then concentrating on the figure and finally the faces and hands as the story goes forward. You have to decide what it is important for the reader to see and know and let that guide what you give attention to in each panel and on each page.