Mountain sketch.. a love and hate sketch..LOL!

This is a drawing based on another sketch but was altered to make my own. The idea was to work more on shading and lighting and to give my drawing more depth and personality. There is some muddiness with this sketch that bugs me a great deal but the idea was not to draw perfection but to learn. Now that I have it scanned and I see it more clear...I lost my depth and detail. I got a little carried away with the smuggling I guess.  Maybe next time it will look better?