Customize Theme comment template to Insert VoteUp and VoteDown buttons

I am using a theme that has an okay comment template that I would not want to change. However I just want to insert voteup and votedown button directly below the User avartar

I saw a suggestion to add a callbackfunction that would create a new theme. Using this SO here.

Then I write my function

How best can I get the structure of the current form? Or can I use another method without using a callback function which I would need to enqueue or add to a helper function on my plugin?