Yo, Snakker here, local noob. Gotta say, for someone who doesn't like making backgrounds you do a damn fine job!
I think I would try toning down the line weight on the right side or the opacity, as I feel it's a little strong on the eyes, almost like a moire effect
The clock ellipse is either slightly off or it's the lineweight that gives me that feeling, as it is in perspective, the minor axis would aim at the vanishing point and thus give it a slight tilt
those are the things I notice, but they are very minor, your background is really really good
cheers!
PS if it's artschool, you can just make a post on artschool forum and post all your work there
