conceptually, i think it is fine. but the execution can be improved.
the whole photo should be sharp throughout to emphasize the uniformity being broken. it will help if the steps are of same height and without perspectival distortions. i can imagine it will be good with a pair of ballet shoes instead - compositionally. but of course that is such a tired subject.
title also a bit salah. just because it is carpetted and it is posh? what is a posh staircase anyway? grand staircase probably. and chillin? dont think so. "chilling out on posh stairs" sounds amateurish.