Awww, you're too sweet ^///^

Just study Yana Toboso's original art and remember the feeling and emotion you have upon seeing it and draw him (i.e.: Mysterious, grim, seductive), but do NOT put the original drawing next to your own paper, for it'll make your own fan-art appear stiff and traced. But keep the drawing you like the most of Sebastian nearby to check it when you have the feeling you're going off course, so that you won't end up drawing a Sebastian who is hardly recognisable.

Thanks for the fav!