Firstly, I normally sketch using the Rite in the Rain paper and the charcoal I use I've had for so long that I don't recall the brands. However, I do know that it's compressed and reformed from pure wood charcoal. The broken bits have their use as well, since sharp edges can be used for finer areas.
Also, I think it should be noted that my paper usually is approximately 4x7", with my sketch only using up 1/2 - 2/3 of that page. And all my lunar sketches are done at the EP using a bluish/white soft headlamp that normally hangs from my EP or the focuser.
For the sake of this tutorial I have used a 60 lb wt art paper at my tool bench with camera and tripod set up above me. My sketch is drawn using a photo from Nasa out of Wood's "Modern Moon" as my subject. I never use photos for my renderings, but rather I sketch at the eyepiece. However I chose to use the photo for the sake of this tutorial because its been cloudy for days.
First step - lightly outline the featured object and fill in the darkest area of it faintly. This way you can draw over it in case you don't have the formation correct. It gives me a starting point to focus on.