Oh!!! Forgot one thing! XD Sorryyyy....on your latest work, with the glass and frost girl, you put the step-by-step and on the third step, how did you made the shadows and that soft grey color? Are you using a computer program on the third step or you only use it on the fourth step... ooor... you don't use at all?!
Hello! I’m not really sure what you mean by “soft grey colour”, I haven’t done any colour changes to the line-work in step 3, only in step 4. The shadows and blocking (which I think might be the grey effect you are looking at?) are done with really short strokes and occasional light outlining so I don’t go outside the lines, cause I’m shit (lazy) at cleanup.
Tumblr re-sizes the images so it’s hard to show something that is close up without making a bazillion posts, but I hope looking at it closer might help answer some of your questions: http://sta.sh/08ysw8xjg8s
This effect can be achieved in any medium :)