Work on improving your English. Right now, it's a little weak. Better language skill will be useful in every job for the rest of your life, open up many more choices, and help you to learn faster because so many resources in the IT industry are originally written in English. Also, improving your human language ability will strengthen your brain in general, and make the computer language skills evolve naturally - the technology will take care of itself.
Start reading the Economist. It is published once a week (not too often) and it is the best-written periodical in the English language. Also, read English language fiction to get a better understanding of speech patterns. You have a good basic ability, developing it will give you a valuable professional skill.
