Here's the background for sunflower #1. After getting the other 4 sunflowers in progress, I felt like the background on this one didn't match. So I'm going to add some lighter blues to the sky so that it blends better with my series.
Here's the new sky after adding lots of lighter blues. It's a subtle change, but I think it was worth my time as I wanted to make sure all five flowers look like they could hang together as a series. I'm going to let it dry some more before starting the petals.