As we say in worldbuilding, your world, your rules! One small suggestion might be to try changing the direction of the light for your shaded relief. Currently it comes from the bottom of the map (south), which is rather unusual and can make topography look "upside down" or inverted- this is partly how I caught on to the source of the topography. I would recommend changing it so that it comes from the upper left, which is the usual angle for topographic maps. If you're working with DEM data that should be possible, though I don't know exactly what your technique is (and don't know enough about Photoshop anyway).