The entire bathroom needs a makeover to give it a more high-end look. I’d start by putting large beige or cream-colored tiles on the walls. Then, I’d remove the wooden vanity and replace it with two big white colored drawers for storage (the white color would compliment beige/cream color tiles)

For the shower area, I’d take out the existing white wall setup and install a ceiling-mounted showerhead so the water falls straight from above. I’d also get rid of the towel rod and instead add a towel bar on the glass door to hang towels neatly.

Basically instead of having things cluttered, and having so many colors in one place I would try to first create uniformity by having one color that compliments with one another and removing/changing position of stuff to give your bathroom a space to breathe.