Try to move head character, need help

Hi everybody, i’m new.

I have start to create with the Unreal Engine 4 two weeks ago. After watch the tutorial for animations (“3rd Person Game with BluePrint” https://wiki.unrealengine.com/Videos?series=PLZlv_N0_O1gZS5HylO_368myr-Kg2ZLwb), now I try to move my chaaracter head with my mouse.
I already tried somethings like that : 81905338c523b36364cdfbec1aeb3311bda80cb6.jpeg


b0776e7771e4af9e57c42e55f6b3b310dbba9aa7.jpeg

Please, I need your help to achieve my project.
Thank a lot.