Its very hard to pinpoint exact issues. but here are some things worth considering props and characters dont always come together, in this example the dragon and environment looks really different. the rendering style is not the same, and I get the feeling you made the dragon separately and then pasted it into a background…
That's probably one of my biggest problems :/ I do draw some other things as well such as animals but I've never been comfortable with humans for example. I'd love to be able to draw human faces properly but it's just out of my comfy zone. I keep telling myself that I gotta learn it at some point but never really started…