Hi. I'm learning japanese as well, like you, - but english too. As for me, my pronunciation in english is very bad, and I like when people correct me, even if I feel uncomfortably because of that. Sometimes I get nervous, and I start to be afraid to speak even simply words out. But I take a deep breath, and that's all. My opinion, don't pay too much attention what others saying, only when it's worth for it. I mean grammar, and all. Pronanciation will be improve itself, when you use the language with native speakers. In the other hand, don't forget that Japanese are really polite and touchy. So, don't be afraid. ;)