Graphite drawing on A1 paper

Drawing on a sheet of A1 paper in graphite. This drawing shows tone, shape and line. I drew this from a section of picture, of a tree in my house. It shows layers through the use of graphite - layers of graphite that form different tones and shapes. Also the layers of the tree - the leaves overlap and almost get entwined, creating layers of leaves. I found the graphite hard to use at first, however over time my style of drawing adapted and I found that it did not have to be perfect and smooth, and I could infact use rough and sketchy marks.