Thanks for posting! Kaeli is right, I think that Dorm Decor video could be really helpful for you — at least to give you ideas of things you like and would want to implement into the space!
From what I can see in the picture, your room already is put together with main (and cute!) pieces, and is organized, which is great! What you should focus on now are the smaller accessories and accents that will bring personality and pull the whole thing together! Some throw pillows for the bed and some art on the walls would go a long way!
Also I can’t tell from the picture if you have a side table next to your bed, but if you don’t, I would grab one and set up a cute thrifted or vintage lamp on it!
Hope this helps! Have fun decorating!