Recently I saw some cut down crepe myrtle logs from nearby trees and asked about them. I was able to acquire a pretty thick branch with a nice shape.

The only reason I'm considering attempting to grow something from this is because the upper part is still green under the bark if you scratch it. I've heard stories of people chopping up crepe myrtles and growing new trees from branches, but this one is pretty thick (I want to use it for bonsai), about the size of my fist at the lowest point.

I'm wondering if anything could happen if I made a new cut and applied rooting hormone? How would I best go about attempting something like this?