We love sign language at our home too. I do believe along with you, that it does help with meltdowns and helps tremendously with communication. I love watching them trying and eventually seeing them being able to use it themselves. Your photos were very clear and readable. But I bet videos would be awesome as well. :)
I love that so many parents are getting on board with sign language. If you knew you could communicate with yours kids early, why wouldn't you? I am glad the photos worked well and I am still thinking about doing a video. -Aimee