Steps 2 - consists of non stop unadulterated reps. This is best done after a full nights sleep, well let's get real just a quick nap :P What’s most important is that the eyes have been given time to rest. Using a pen plus a light pad, what is essentially happening is that the primary sketch will be getting redrawn repeatedly. The light pad allows opacity control just like in photoshop by allowing minor changes to happen on each re-ink. Whereas in the first step there should be a 50% difference on each shoe at this stage there will only be a 15% variety. This can easily be accomplished by beginning each ink at a different point, say the last shoe was started at the heel begin at the toe on the next one. Strokes will bring about a life of their own and new character will be brought into the same basic design. This helps instill a sense of muscle memory beginning to make the lines much more confident and purposeful line work. I encourage you to continually rotate the piece.