I don't know if it's your lighting, but the white tile looks too creamy. I'd do a neutral white. I think I showed you the one I used in my own shower,
and my neighbors. These are 4x12 ceramic. you can do the offset or the stacked pattern.
I don't care for the smaller tiles in a shower because it means more grout lines. larger just looks better.
these are from home depot and have a slight crackle. the white is a nice white
or these:
vanity navy,,I like these
and this sconce
For your Black/white choice, This is Shadow Storm quartzite, matte black faucet, and two choices for lighting
I like the Lunada Bay tile (above) for you shower on this one. Moonstone would be nice. or I'd do the white w/a matte black herringbone insert. Like this:
or behind the vanity
Q