Learning how to shade... got any tips..much appreciated

I don't exactly know if this is the correct way but it works for me.

Explanation:

I gently scribble some lines, dark or light scribbles depending on the darkness of the shade you want, then I use my finger and push down whilst spreading around the scribbles making it look like shading. If there are still scribble marks afterward, you can erase it and gently do it again until it matches the shade you'd like. I don't know if this helps but that's the technique I use

ok so what i do and i am passing this on use a q-tip and add a little pencil lead were you wantit and use the q-tip to blend/shade

Explanation:

logic homicide

doric, ionic, and corinthian, and there is no picture