Hi mate. I'm an illustrator and designer, and I believe that I can design you something that will really enhance your back piece. I've checked out your samples, and think I know what you're after, but check out my Freelancer portfolio (illustrations folder) and if you like some of what you see get in touch and we can chat more. I don't know if you want to work something more illustrative into the mix, or if you want to keep it purely tribal, but I am capable of doing both. Where abouts in Aus are you, I have a couple of mates that are tattooists in the Sydney area, as well as one down in Melb, so I can recommend them if you are looking for a new inker. Anyway, hit me up if you'd like to chat more. Cheers! Josh