As mentioned I have completed the trunk chop: https://imgur.com/a/AwrfH (I would upload the images here, but my internet's damn slow!)
However after reading this: http://bonsaijournal.com/beginners-trunk-chop-101.php I believe that I may need to round this out? Is this the case or is the cut ok?
I did the chop about 2 -3 weeks ago, so if I do need to round it out, I'm guessing it's not too late?
Also is there any special care required after performing a trunk chop?
On another tangent, I'm thinking a couple years down the track performing another trunk chop to get rid of that ugly scar down the bottom. I bought the tree Like that, I'm not sure what they were thinking?

Many Thanks,
Mike