Introducing  Myself

My English name is Matin Lin, my Chinese name is Lin Jiacheng. My favorite music is 'The road to ordinary' ,It`s a Chinese song. I can speak some Chinese,my Chinese is no bad.My hobby is roller skating, I like it very much ...

Introducing myself

My English name is Matin Lin, [space after commas and periods, not before] my chinese name is Lin Jiacheng. My favorite music song is "The road to ordinary." It's a Chinese song. I can speak some Mandarin Chinese. My Chinese Mandarin is not bad.My hobby is roller skating, I like it very much. 

If you are a native speaker of <em>putonghua, </em>I would assume you speak more than "some Chinese."