What are some easy ways to redecorate your room more tumblrish?

Want are some of the main things that tumblr rooms have

Or what are some cute DIY's (videos would be helpful) to help redecorate and like organize my room more.

And lastly is there a website to base your floor plan to readjust your room more virtually. I have a small room, but big furniture, and I don't want to waste moving it around, and then not like it.

As I just said, I have a small room.

I have a Full Bed, and bed frame, pretty wide dresser, nightstand, shelf, mirror, and shelf (furniture wise).