Mandarin Chinese (#1)

I want to speak Chinese, so today I listened to hours of Mandarin audio to learn what little you'll hear below. The most difficult part about spoken Chinese is that it's tonal. Get the tone wrong and you've said an entirely different word than what you intended. The video below is probably gibberish to a Chinese person, because I'm sure my tone is awful, but what I tried to say is, "Excuse me, may I ask you a question? Do you speak English? I speak a little Mandarin."