I think your English is excellent.  You spoke fluently; I didn't detect any grammatical errors; and everything you said was completely understandable.  The only "problem" that was noticeable to me is that on two occasions, you mispronounced an initial "w" like a "v".  The two words were "where (I stand)" and "what (I did)".  

You speak English with an accent different from mine, but that is no problem.  From your perspective, it is I who has an accent.  

Keep up the good work!