Your English is fluent and highly idiomatic; the sentences flow easily; the punctuation is almost perfect; only one typo. I would say that for your age range, and, given that we live in an era of text speak (i luv u c u), your English is better than that of an average native speaker. Not just on a par, but better.

So not clumsy, not, not at all.

The reason I am writing about - I am wondering whether you are as excessively critical of your manners as of your English. Because you know - writing - also a manner of expression, and you write playfully, fluidly and succinctly. In your writing, the voice is not loud; in your writing, you are not annoying; in your writing, you are being appropriate.

So it could be that you write far better than you speak face-to-face, or, it could be that something else is at play and you are not clumsy in interactions with friends. What would you say to this? Do you write better than you speak, and so, is it because you are not trying to make anybody laugh or like you better?