Here are some stages my sunflower went through so far. I will probably make a few more adjustments still.
This is the sharpie drawing, I had began to fill in the background petals with circles but didn't like it. I removed them once it was in illustrator.
One night I spent a lot of time cleaning up the edges of the sunflower, and added some texture. The title was a rush just to get my idea down.
I changed all the colors somewhat, and added another texture and darkened the color in the center of the flower. I adjusted the wood texture in the background. The most significant change was I completed the title. I have been on the fence between having "sunflower as it is or fully lowercase. Uppercase was too much to look at.