Looking for suggestions....

My guest room needs some freshening up. I need some ideas! Please leave your suggestions. Its kind of a beachy theme in the room. The walls are a bright yellow...this will not change..cause I don't feel like painting them over. The roman shades are a navy blue. The bedspread is navy on one side and a lighter blue on the other. You'll see in the picture that I have the bed up on risers. I like a tall bed. I just need to get a bed skirt for it. I am wondering should I change the bedspread out (FYI the curtains are striped), keep the bedspread and use a white bed skirt? Or another color? I have those little plates to put on the wall too. And there is that wheel..Should I paint it white or stain it. I was going to hang it on that wall (see pic, I was trying it out)...but, it looks so alone and small on that wall. So..you can see from the pics I do need some help ;-)
Now...if my family, who actually uses this room when visiting, is reading..feel free to offer suggestions too :-)

Thanks you guys!!