Hydrangeas, or any flower made of small clusters, are taxing to my brain! I think they're best painted by negative painting ... picking out all the little interstices.
I did this in two stages: the (blurry--sorry!) photo below shows where I stopped last night. Today, taking a break from work, I kept adding and adding until I ran out of time! Not the best methodology for watercolor painting.
I wish I had planned and left more white space. If I do it again, I will.
