oooh that looks awesome! i really like the bad guy in the second frame, and i especially like the third frame. i do have some suggestions, though. in the first frame, the guy's legs are little too thick. makes him look kinda short. and in the second frame, the main character's face is a little too thin, and the eyes a little too big. and, uh, i have no idea what the fourth frame is supposed to be. you should also try to make your pencil strokes smoother and darker, and not so sketchy. but otherwise, good job!