their are better people on here to answer this question than me, but i dont think it looks too bad. i guess the texture u have on the floor doesnt help. its very striking and doesnt help the perspective. and theres no real variation in shadow between the front and back (on the floor) , esp where the floor meets the back wall. so lighting is an issue. maybe your camera is also a problem aswell as/rather than whats in front of it. you could maybe change the position of the camera and/or play with some of its settings that adjust the angle/perspective?