This is very intricate free hand nail detailing so Im posting it only as mere inspiration. However, you can use the same idea using negative space down the middle and use water decals or stamping to get the same general effect as the pic.
/* we raise our wands, & bid farewell to our dearest professor Snape. Such a tremendous loss of an amazing actor. Alan Rickman, you will be sorely missed ART PRINT Severus Snape Harry Potter illustration by SubjectArt ALWAYS
Alan Rickman aka Professor Snape from the Harry Potter movies! Professor Snape is my favorite character in the series and Alan Rickman was the perfect actor to play him! I absolutely positively love this quote from him!