I'm pretty sure it is B a minor interval, because a note is lowered, it is a minor. Sorry for the wait, had to do some digging in my memory. Good luck!
I don’t like that here is no harmonious tone between the to colours. I also hate that the picture is not exactly expressing a certain feeling or telling a story through the imagery
Answer:
There is no right answer but in my opinion it is Leonardo da Vinci
It looks good! what were you thinking for the background?