Which build to my Witch?

Hello!

I started to play this game few days ago, and went "TOO YOLO" with my build (or not?)

https://www.pathofexile.com/account/view-profile/Blasesist/characters?characterName=BlaseSenpai

Should I respec my passive tree? Or can I play with tree like this and for example expand in another way? I'm mostly using Magma Orb/Bodyswap and started to use Flameblast (I want to go this way).

Sorry if I created thread in bad section, I didn't know where to create this.

and thanks for any help! :)

~Blase