This is very nice, and on such a small surface.
There was a movement of doing very small canvases, but I can't recall the name of it now. I believe it was Renaissance'ish era, but this kind of reminded me of that too.
I wasn't familiar with Pointillism, but I looked it up and now I have learned something new.
Are you familiar with the Australian painter Brett Whiteley? He's probably my favorite artist, but he passed away. I try to share him with other people who appreciate painting because he was famous, but not often mentioned.