My personal feedback for the new Shaco skin to make him look more like Shaco since imo it looks somewhat off (excuse the bad photoshop skills). See comment below for context/explanation. :
MAKING THE ENEMIES LOOK STUPID WITH NEW SHACO SKIN! (WINTERBLESSED SHACO) - YouTube
I TRIED A NEW SHACO BUILD IT'S 100% AMAZING! (THIS IS SO FUN) - YouTube
Shaco: Champion Spotlight | Gameplay - League of Legends - YouTube