Thanks for the reply and most certainly you are welcome to write in open comment about anything. I am glad you took one step forward to shape up your English skill. Most of the people I met, they do the "talks" but never act on it. I am soooo pleased to see that you are the person of action! Once you take the initial step, it will only get you closer to your goal.
About the Republic of Peru, their native language is NOT English. Their major language would be the Spanish. I am not sure how skilled in English the person you were able to contact with, but as you know, Western Languages (Ex:English, Spanish, French, Italian, etc.) does come from one base language which is Latin. So, the chances are this person may have been familiarized in English Language. It might be good, cuz you get a chance to learn Spanish or whatever native language of his/her as well as English.
If I could give you one more advice, that would be this: If you don't know something, first, look around and search, if you still aren't sure about something, then ask around. Do NOT let go of the ambiguity you might encounter, cuz ambiguity is like a snow ball, it could only get bigger and bigger, unless you smash it!
Oh, one more thing! (geeesh, I really started to sound like the famous detective, Columbo!) Take TOEFL exam, once you are comfortable with your English language. Japanese EIKEN means really nothing and it sure doesn't represent the English skill of a person accurately. This TOEFL is one of the world widely administered and recognized test for people who's native language is other than English. Of course, scoring high in this exam only means that you does have "basic" communicative & writing & reading skill needed. However, this English exam is much higher level than those of "EIKEN" exam. TOEFL also administers TWE (writing test), TSE (speach test). I recommend you will take those as well. Most American & Canadian universities require those test to be taken as additional entrance exam. It's a very accurate way of knowing your English level. There are other testing but that I recommend after you tried TOEFL.
Have fun and thanks for the comment. Feel free to write about anything you wish in comment section. One more idea I suggest is make your own blog site as well and try to write something daily. It will improve the vocab as well as writing technique.
P.S. I did have another blog site that totally focused on my real life interest. I eliminated that web site though... May be one of these day, I will make another blog site that focused on other than games.