Your Sunday Jigsaw Puzzle: What part of NO don't you understand?

HintHere's your free Sunday jigsaw puzzle. As always, remember at the puzzle site to click the square in the lower left corner to see the finished puzzle. I hope you're keeping track of track of how long it takes you to do the puzzle each week. This is the hardest puzzle so far. 
Have fun! To do the puzzle tootle over to Cat Puzzle