Practice makes perfect. For other Nationalities they are not perfectionist when it comes to grammar, as long as you can deliver it right and pronounce it right (except for writers and poets). It's only for Filipino's who are trying to be perfect (wanna be) with grammar and everything. Just be yourself and be confident on how you deliver it. Keep on reading books, watch english movies with sub titles and listen to english songs. Make friends with English/American people and other English speaking Nationalities and it will help you a lot. Always open yourself in learning and always accept good / bad critics. Be confident and have the attitude. It will help you improve your English language.