Art Class Sketch- Nose and Mouth

One of the tasks we got in Art this year was to make a sketch of a mouth and nose. I ended up with this sketch after a lot of tries, and I still think I could do better, however this one I chose to submit. While sketching, there's many things to think about such as, shading, blending, lighting, and most importantly the structure of sketching, like deciding how thin or thick each feature has to be, etc. However, this is the final finished and polished product!