How to play animation while strafing ? [First Person]

Hello everyone !

Like many people, I’m new to UE4 and blueprint, so i have some troubles animating my first person arms.
I’ve read a lot of thread, but i don’t understand, and I’m not sure if it suit my question.
What I’d like to do, is having the weapon to rotate a little in the direction I strafe in. I started to build a blendspace (see pictures ) with a speed and a strafe variable but then I’m lost.
Maybe I don’t have to do custom animations, but just rotate the mesh ?

So I was hoping that anybody could help me with that, or just redirect me to the right thread.

Again thank you.