This year I shot the fireworks from Zilker Park on the downward slope of the Great Lawn. Half the park was still closed due to Trail of Lights that had ended a week earlier but I was able to shoot over the fence, and the foreground was pretty dark anyway.
The smoke from the fireworks this year was particularly severe, compounded by a breeze that was very slow and intermittent out of the south so it lingered in pockets all over the north side of town for hours. Driving and walking around town afterward took a toll on my lungs and sinuses that I'm still feeling 36 hours later! I felt like I was in the Far Harbor DLC for Fallout 4, where random clouds of radioactive fog drift all over the map and damage your character.