the sparseness of this background i think works a lot better than in the scene with all of the religious symbolism, maybe because the piece overall is a bit less busy, and the furthest layer of environment is a lot closer,, like everything is a lot more succinct! also the way the little black curls you've made to symbolize the air is so cool here because, tied with the craggy rock, it almost brings forth this idea of waves slamming against the rock and the sea air is spraying all around. it's very cool.
i do kind of wish there was some tertiary element here, but maybe that's just me.
