I now regret not trying Brushes when I was sitting at the corner of 23rd & 8th Ave in NYC two days ago. I -- yet again -- spent too long on a sketch done on the Paper app. Liz and I decided to change our location after sitting on the sidewalk for 45 minutes or so. On the ride home, I whipped out the iPad again. I had to apply some of the lessons on perspective I had gained from the incredibly talented Liz that day.