Nice atmosphere. Will this picture “tell a story”? Such as, the reciever is dangling and some papers are on the floor, as if someone just ran up the stairs…or something…images are always better, IMO, if there is a narrative.
-the proportion of the stairs looks kinda off. Treads should be about 11" or so, risers 7", and in an old house that might go to about 10" to 8". Certainly not 1:1, tho, which is what it looks like you’ve got.
-things not to forget as you develop this: base molding at the floor, molding at the juncture of the stair and the wall, handrail, nosings on the treads.
Obviously these are details that will make it look more realistic, but if that’s not the aim, then you can safely ignore me.