Hello,
To spawn your character : open your game mode blueprint (you can find it in the blueprints folder under thirdpersonBP for third person project or folder related for other projects.
About toon shader, this thread may help : trying to make Toon Shader Material on UE4 - Content Creation - Unreal Engine Forums
About anim, in Creating an Aim Offset | Unreal Engine Documentation anim is cut to have separate anims. I suppose that you can do the same with longer anim parts.
About first third character , you need a mesh ingame to be able to reflect it then you have to set a third person character and set visibility (owner no see and cast hidden shadow for head and chest)