I like the tile color, size, shape, and pattern. I think this would look nice with a green glass tile running about from top. Or rotate the pattern to run vertical and a stripe of green glass tile in middle center wall.
In most bathrooms, the shower enclosure is a bit of an afterthought, just a practical solution for keeping water from spraying all over the room. But lately a different kind of shower enclosure is picking up steam — steel framed doors that make the shower a thing to be celebrated.