this is just something ive been working on for the past hour thought i would shareheres a updated version all ive done is change the height nof the door and the opening
Very nice composition and texturing 
I like the lighting on the stairs.
It looks like some of the textures are procedural and others image maps?
Those stairs are confusing. Do you have to bend down to get through that door?
Maybe you should try some Bumpmapping on the floor.
I have to agree with zanos. The scale of the stairs (the width and the risers) seems a little large for the opening. The art and lighting looks good though.