I would agree with most people here that this may not be the site for your art.
The faces and proportions..I would recommend that when drawing the basic shapes of things, to continue your lines all the way through and see if the orientations and proportions make sense. Also, use current drawings and pictures of your characters (since they already exist in polished form) to compare to.
Why do the jaws jut out half the time? And the sizes of the arms change from panel to panel. In the third page (not including cover) the raised forearm appears longer than the torso and the entirety of the other arm.
The lack of shading and poor orientations make a lot of this look extremely flat. For example the cars on the road and the food on the table.
There is a lot of improvement needed here, I think you should work on building character sheets that demonstrate how each part of your characters anatomy changes as they move. Orient them in many ways and work on the basics.
I'd request that this be taken down as I'll most likely be attempting to hide it from here on.
Edited at 10/8/2014(Sun)05:36:48