Welcome, thanks for posting. Don't know if you're looking for feedback but here's some for free.
The composition is muddled. You've mixed multiple artisitic drawn styles on an unrelated photorealistic background. Some characters cover others in way that accentuates the "clip-art" feel rather than create a collage feel. If everything was put on a black background, redrawn in the same style, and arrange more cleanly I think you might be onto something.