You're going on well. I've always prefered b/w pictures. Just let me give you a little advice. When you get your draw finished, pass it over to a blank sheet and draw it back in one stroke with a darker pencil a No. 2 well sharp will do, then finish it using pencils with different hardness and start playing with shadows and light. You practice and see the results for yourself!
Ganbatte, Anchyy, and practice all the time, even on napkins!