What should I do for my room?

I'm painting my room a dark (but somewhat bright purple) my ceiling and two of my walls are this color. The other two walls are magenta- ish (bright kinda) pink. My room is fairly large. I think my ceiling look's somewhat plain! I was thinking of splatter painting it with the pink color I used on the other two walls. If so how could I do this? Or any other ideas on what I could do to my ceiling (with the pink paint)? Thank's for any help! :)