I just finished an oil sketch to figure out some colors and compositional elements. I'm still contemplating if the image should be closer to the subject or more pulled back. The cartoon that I currently have is for a 25" X 21" canvas, which is smaller than my original, 30" X 24" canvas. I'll decide on which format I think looks better before I build my canvas.
I'm leaning towards the 30" X 24", which is what the oil sketch's proportions show. I have a lot of plant studies for the yellow evening primrose so I will probably decide to show more of these background elements.
This is why these sketches are important; they're all experiments that may or may not work so that everything is ready for the final canvas.