Soft-shaded version. This is what I start with for shading. I started experimenting and found it works for me.
Cel-shaded version: https://www.weasyl.com/submission/1313402/prize-deadlylittlekitten-cel-shade
Do not copy, edit, trace or repost. Commissioner/Character Owner has permission to repost only. Can also be found on my DeviantArt(FuzzButtFursuits).
Character: http://www.furaffinity.net/user/DeadlyLittleKitten
Art © me
Reference: http://mariaamanda.deviantart.com/art/Neko-Stock-338268273