Powder Room Design Plan

So here is the plan for how I am going to take my dingy powder room to the next level.  I posted earlier this week about painting the trim and panelling white. 
 
 
 This is what I have in mind for updating it further.

 
I like this grey and white shower curtain from west elm, but I may make one myself so that it covers the tub completely and I can hang it higher on the wall.   Although I lightened up the trim and panelling I want to add a deep dark grey on the wall and the ceiling, its a tiny bathroom and it could use some drama.  So with the painted floor, some great art, gold accents and new lighting, I think I can turn this room into something I want my guests to use.