The first part: Measurements
For the last 2 years I believe I did a 5x6 piece. I can't remember the actual size but looking at an outline in my driveway that would be my guess. I want to bigger this year. After a couple emails with Joe and Julia (Fellow chalk artists) I decided to make a few rectangles in my driveway today.
The size that appealed most to me was a 6x8 ft piece. My brother, Cory, came over to help me battle the wind and get a feel for the right size.
My Springer, Ruby, was naughty and escaped the fence to come help too. She really just wanted to cuddle her Uncle Cory though.