Let's take a quick look at what we started with. The room was very yellow when we bought the house. It had a massive formal vanity, window trim for baseboards, brightly colored slate tile and (you can't see it in this picture) a very ugly pendant light. A hot mess. Since then it has been a few different colors.
I chose a dark teal printed grasscloth wallpaper from Spoonflower. They custom cut it to the 4' lengths I needed above the bead board, labeled each roll and provided a legend showing which numbered roll corresponded to which measurement.
I've never hung wallpaper before so my parents were really generous and papered it for me while I was at work. They said it was a 2 hour job. They're such peaches.
Then we hung this gorgeous Parsons bone-inlay herringbone mirror from West Elm.
The sink, lighting, fixtures and bead board were all put in the day I went into labor with my now 6 year old so this was strictly a cosmetic upgrade. Those are my favorite kind.