The 18-year old is playing in his first season of senior golf, and managed to take out 2013 champion Harvey Escribano as well as fellow experienced golfers in Tasi Lolesio and Dale Baker in the fourth and final round.

It was a tight battle, however, as he finished with an overall gross of 294 and a three stroke win over the second placed Escribano and third placed Lolesio.

The full time concreter said he now hoped to improve his playing skills across different courses to one day make a living out of golf.

"I just want to win a few more open competitions in NSW, and that's my goal over the next couple of years," Tisma said.

Tisma said the Queanbeyan championships, which ran for four days across the last two weekends, was tough fought all the way through, and that mistakes from his opponents eventually helped him over the line.

He teed off the start of round four with a three shot lead, but found himself one down at the 13th hole, and said the pressure was right on to keep his game together from there.

"Harvey hit his second shot of the 14th hole into the trees, and that's always hard to comeback from, and I was able to get the ball on the green. I held it together in the end," Tisma said.

Tisma is ranked with a handicap two, meaning his estimated score is two above par, while Escribano is handicapped at one, and Baker is at minus one, and in theory, they would have been favoured to beat Tisma.

"I definitely felt nervous, but beating players like them gives me a lot of confidence in future golf I play," he said.