I really like the chef having a fag, nice simple composition with a great background.
The first one doesn't really work for me - there's a bit too much going on in the frame. I could suggest that you try a wider aperture (smaller number) next time or use a longer lens, both of which will help to blur out the background to make it less distracting.
I love the subject in the third one, you can invent a good story around it, but again the background is distracting, however I don't think it detracts from the image as much as in the drummer pic as the main subject is, to my eyes, more interesting.
So on the evidence on what you've presented here I'd say that you're not bad at all at street photography!