Trying to decide on a theme for baby girl's nursery!

I just can't seem to find a crib set or theme that I really like. I don't really want any of the store bought sets because they are so cartoony and most are pretty cheesy looking. I also can't decide if I want something modern or vintage, pastely, super baby-girly. I'm also excited to make wall letters and hairbow holders for our little princess!

I have found one piece of a crib set that I like, this is the bumper:

and the whole set looks like this, but I'd prefer putting a green sheet with white polka dots and some kind of tulle or lacy crib skirt.