

First sentence absolutely correct, the first sentence one has to know in a new language. Ich bin Mieko. I - am - Mieko. Ego - Mieko - sum.
Second sentence: Awww...nearly correct, is has to be "Ich bin sechzehn JahrE alt" (not "sechzehn Jahren")
amazing you know the number, sixteen

JahreN is used more in the...argh! Please don't let us speak about german grammatic, I even not know it well

*clapping and applauding* Was very good.
Last sentence: "I think Mieko is so incredible" = "Ich - denke - Mieko - ist - so - unglaublich"

(But "think" in this sentence more means something like "Ich - finde [where "finde" stands also for "I have the opinion that"])
Confused? And now you are allowed to take revenge on me using your first language
