I think if short hair looks good on you ( I think it does
) shorter will too. And I had the same feeling when I first went short. I had past-the-shoulders hair for almost all my life and then decided to chop it into the Sienna Miller bob circa Jan. 2006. I loved it and kept it that way for a few months and then decided to go shorter into a pixie (which it has been for a year and a half, I loved it too). My logic is while you have short hair, try whatever you always wanted, it's not a big risk since your hair is already short. I even tried different colors like platinum and dark brunette which I never would have dared try on my long hair. Short hair is perfect for experimenting because it grows out relatively quickly so I suggest try whatever you want to.
And
sweets - your features are so pretty! I can't see much of your hair in the pic but I think you have ideal feminine delicate features. You could be bald and still look pretty. Not that you should be bald though, I like your hair.