There is magic when you visit a place you spent time as a child. The park has changed but the feeling is the same. There are lots of places to sit or gather to eat your food. It is a nice park, I don’t know why I don’t go to Rocky Nook Park more often.
When doing a painting it is often a good idea to study the details to make magic happen. The tree from a distance seems to be gray, but when looked at closer the other colors seen bring light and shadow. Texture is created and interest added with the reddish brown shades you see in the closeup of the bark. Daniel Smith Quinacridone Sienna watercolor might be a good one to use to add a spark to a watercolor painting of this tree.