Impatient attacks are hazardous to one's health

In this very quick game, my opponent got off to a great start in the Sicilian; however, due to some subtle mistakes, fortunes reversed quickly.  I'm analyzing this game in part to try to pinpoint what the critical mistake was.

Having analyzed the game, I do not think any single mistake was fatal.  I would say, though, that there was a clear pattern of attacking without a proper plan or proper piece development supporting the attacks.  This gave me tactical opportunities that I was able to convert into a win.