Man oh man - you are quite inspiring. This is now on the top of my to do list. You are very good at what you do!
That is so very cool.
I love it, the colors, and the style! 
I like to go to thrift stores and flea markets to look for buttons. I also got a bag of buttons from a friend’s grandma that is a treasure trove. Know any grandmas? Good luck and BEAUTIFUL work!