Taking a previous thicker faded liner and refreshing it doesn't always require the new artist to follow the existing design.  

At first, my client requested a new soft thin lower liner and a solid black upper liner cover up over her 6 year faded permanent makeup.  Although I personally don't begin new liner with wings or tails, I could either darken over previous work  or I have an option to create a new design.   I explained to my client that her faded steely grey-blue liner could act as a shadow above a  black, dark defined line in the lash line.  I also thought this would look nice with the soft lower line request.  She liked the new design idea so I tattooed it.

Note that the previous work has yellowish color above the old line.  This is usually a highlight that could have been white and turned yellow over time,  or there was a dark mistake that the artist tried to cover with  lighter ink. In this case, the...