My dilemma is would photo walls on the both stairs be too much, or just on one wall? or something else? There is a big canvas above the window. I've always wanted a photo wall, not had the wall space in our previous house.

I've attached photographs of the stairway. The first three are what it was like when we moved in and the last is after we redecorated. Just to give you an idea on the shape of the stairs.

Another thing, the walls on both sides are quite lumpy and would be nice to cover at least some of it up.

Any tips, advice welcome.