Have you ever done those drawing assignments in high school, where you use drawn grids to practice realistic drawing? The grids are supposed to deconstruct an image down into individual squares, and prevents your brain from trying to "finish" the image itself. It keeps you from looking away and thinking "oh, I know flowers" and abandoning the reference.
I struggle with getting details in watercolour. Is it me? Or is it a trait of the medium? If I squint past these little squares, it does seem like a decent rendition of a butterfly bush. Less so, close up.