Greetings Jon. (Welcome to IAP from Medina, Ohio).
It is evident from your photo that while you may be new to pen turning, you are comfortable with the skills necessary.
Some thoughts: Obviously you have a thought for segmenting - GREAT! Check out the previous posts in this thread, and please consider contributing to it!:
http://www.penturners.org/forum/f179/no-comments-just-post-new-segmented-pens-likes-111419/
As to your pen, it is GREAT! I am not familiar with Aussie Beefwood, so that was nice to see. The combinations of your segments worked well, so the final appearance is appealing.
Where are you in Aussie-land? There are several "down-under rascals" that frequent IAP, so you are not alone!
Again, Welcome!