Hello Luca, welcome. Here is my correction:
Hello, I'm Luca from China. I am a newcomer who registered on italki only yesterday. I want to learn English and Japanese, and communicate with you here. I hope I can learn something here. I also hope to share my life experience and feelings with you, and I look forward to becoming friends with you. My English is very poor, if you can, please correct it. Thank you.
I left as much of your original text as possible as long as it isn't outright wrong. However, I can help you improve your writing in a class.
All the best for Japanese. As for English, I can teach you and help you improve. Please check out my teacher profile and feel free to book a lesson :)