Cool teenage girl bedroom ideas?

I want re-paint and organize my bedroom, but I'm not sure what colors to paint it. I'm a teenage girl, 15 years old. I have one wall that is slanted in my room, and I was thinking of painting it with either chalk paint or whiteboard paint. Any ideas for painting my room? I like bright colors (pink, purple, lime green, etc). Is there any way to paint zebra stripes on the wall? (My dad has to be able to do this haha). Right now my walls are purple, lime green, and pink, but I'm getting sick of it. Pictures would be great, thanks:D