I have to be honest with you I don't think this game will achieve 3 stars overall. But don't be discouraged by this, you're just a beginner. You've clearly grasped the basics and I feel like this is an improvement over your previous release, even if the camera is a little too zoomed out.
Just keep at it, be patient and your games will improve naturally with each release. I think I had about my first 10 portal entries blammed back in the day so getting something through with even a 2 is still a great milestone! Maybe you could find an artist to help you out with some graphics?