Clark did not set himself any clear goals to achieve in Australia.
"Whatever I got out if it was a bonus as I was mainly going there for experience which I could bring back and further develop.
"I am even prouder of myself now and a lot more self-confident. I know how much I can actually achieve and I can push myself to that level to make myself achieve."
Clark, a Year 9 student at Tauranga Boys' College, has been competing for three years in clay target shooting. He collected nine provincial titles in junior categories in the trap or down the line (DTL) discipline before deciding to switch to skeet a year ago.
Clay target shooting has different disciplines known as trap (DTL), skeet, ISSF and sporting clays which all have their challenges and intricacies.
Clark says there are major differences between the trap and skeet disciplines.
"DTL is where you are situated 15 metres behind the trap which flings the clay targets out. You have five stations in a slight arc, and you call pull. The trap is oscillating going left to right so when you call pull it flings the target at a different angle every time.
"Skeet is a bit different. You have what's called a high house and a low house. There are eight stations where you get a different sequence of targets from each station, and each station has its own little difficulties which I took a shining to."
Clark decided to change to skeet after he had realised it was a bigger challenge than DTL.
"I wanted to master each station when I go around as each station has its own difficulty level. The school circuit around here doesn't provide me with that challenge," he said.
After cleaning up the Australian nationals, Clark has his sights clearly focused on the New Zealand nationals to be held in Christchurch in November.