Whenever possible, I brand on center. Inside, outside. I made a jig, a big bbply faceplate to attach to my lathe. Crosshairs indicate where the brand will be. I draw center lines on what gets burnt, line up crosshairs.
I put d/s tape to stick it on, clamps if needed. I can brand anything I can attach to it.

I set a level on the brand before heating with a propane torch.

I got a thing for old Stanley levels, have way more than I use.

Sometime I get it real hot, brand a scrap, then brand the project. Usually, the 2nd brand is good. It does take a lot of practice.

I want to do right, but not right now. Gillian Welch