My cousin made a good point yesterday. She was not familiar with this particular painting of Van Gogh's. So asked me to post a photo of the original painting. It's from the book, The Sunflowers Are Mine; The Story of an Gogh's Masterpiece by Martin Bailey. So here it is from page 53.
Then here is my copy painting. For some reason the photo of this is much bluer than in real life.
Here's a photo from the classroom. Not finished yet but a better representation of the color. And also here you can see my copy and the photo from the book together.