Ok, you now can see way better the lines of the pics. In this step I only make a simple lineart with black pencil, following the sketch. Sometimes I make some changes in this step only if they are simple, for harder changes I make them in the sketch with the green pencil.

Nothing important about this step at all, it's almost like tracing your own lines, but making them smother and single. Multiple traces make a lineart to look messy/dirty, for some style work but for manga, for example, it doesn't work the biggest part of time.

Look for the next and last step. ^_^