I really like the look and the dark wall! Love the black wall - make it an accent wall? Hardwood floors with rugs for master bedroom. This is what my bedroom will look like when we move! But with blue walls and a black wall.
Hang some DIY crates on the area over the toilet to add some decor. The dried beach dahlias in tiny bubble vases, mason jars filled with candles & bath salts, some driftwood, and a few starfish & shells make your bathroom super fantastic.
Reuse an old tree to make a log pathway in your garden. Good use of "yard" trees and other wood that can't be milled; works much better in climates without termites. Good drainage under the log rounds will make the path last longer.