I think you should get layers
It will make your hair more volumized and full-looking
but if you can't get it cut, try going for a hime gyaru kind of style. or something like this:
You're hair is beautiful, long, and curly, and I think hime would fit it best
I love your hair length! My hair is so short
Also, your hair is pretty cute when it's down! Just use accessories or hats like this:
or you can put a little bun on the top of your head!
or put it into cute pigtails like this:
you have a variety of hair styles you could do
these are just my suggestions, though. good luck!