Panel 1: Stick figure on white background. This panel is serviceable.
Panel 2: Lack of any distinction (in intensity of color, weight of outlines, etc.) between character and background make this look like a surreal mishmash of random shapes and colors.
Panel 3: Sound effect, this is fine
Panel 4: Did sneezy guy blast himself backward into a cardboard cutout of a gorilla in a Fabio shirt? If so, how did his head wind up poking through the cardboard while the rest of his body is ostensibly behind it? Or is the gag that since the stickbodies are so hard to make out from the scenery that it just looks like sneezy guy's head atop Fabio Gorilla's body?
Panel 5: Looks fine except for the speech balloon hanging down.
Panel 6: The glaring difference in quality between the figures in the crowd and Yellow Muumuu Guy and friends looks terrible. The positions of the speech bubbles should be reversed so they flow better visually on the page. We read from the top down, so the first speech bubble should be on top.
Panels 7 & 8: The juxtaposition of actual photos with sketchy cartoon figures and text is jarring. The dogcatcher in panel 8 looks like a flat cardboard cutout because the stuff on him that should be moving while he runs (his net, hat, and huge gut) is just sitting there.
Panels 9 & 10: The arrangement of the speech bubbles is confusing. The store employee is clearly supposed to be making his announcement after the stick figure speaks in the previous panel, but your layout conveys the opposite.
Panel 11: How is Yellow Muumuu Guy holding that box? What happened to the line forming the bottom of his head?