drawing of black tree with spherical shapes

Last year I had created a drawing that I liked a lot. A few months ago, I realized that this drawing could have been much better, in terms of its composition.
And so, I arrived at the decision of making this drawing a background for a drawing of a black tree.
And so, I began to draw the tree and gradually, made the original 8 x 10" drawing, 6.75 x 8 inches in size. I altered the colors in the background, too.
The drawing below is the result of my efforts:

Sold