Nicely drawn character, that is.
But your BG looks empty and... boring.
Try to add detail a little, put a floor plant to the corner, rip a bit of tapestry apart, or if it's a very clean and nice room, add a little shelf with pot of plants or something like that! otherwise, It'll be just a big empty room.
And shade everything!
Currently, two connected walls have excactly same color/light, and this is completely unnatural. Make one (or other two) darker, and make them all darker in corners and near the floor. This is just a little work, but picture changes quite much by that. Positively, of course. Think where light source in such room would be, it helps when shading.