The Woodlands fighter marked a significant step up in quality with a dominant performance to demolish opponent Sean Davies inside four rounds at the Racecourse on Saturday night.
It could easily have been over inside the first round when the unbeaten fighter twice had Davies down with rights early on.
But that is where the lessons began for the 24-year-old and ultimately paved the way for the victory.
“It was going too well for me," Mould told the Free Press.
"I had him down twice very early and I just went for it because I knew if he went down again that would be it.
“I chased it too much and gassed myself a bit. It helped him come back into in the second round and make more of a fight of it.
"But I settled down in the third, put him down again and then it was over straight away in the fourth.
“I’m still learning. It was just my 12th fight.
“My trainer said in the build-up that he thought I could get him out of there in the first half of the fight and I ended up doing that.
"It was all about listening and learning. When I settled in, that was when I got the job done.”
A vicious left hook brought the inevitable end in the fourth, seeing Mould collect his first professional title with a real statement.
It had been the first time Mould had fought an opponent with a genuine winning record and he passed the test with flying colours.
Though a pursuit of honours at British level seems likely, he says his next step has yet to be decided.
“I’ll sit down with my trainer [Sean O’Hagan] and manager [Steve Wood] over the next few weeks and make a decision,” Mould said.
“We do know we definitely want to be fighting in Doncaster again at some point this year. I’d love to build a fanbase up here.”
Earlier in the night Doncaster’s Taylor Watkins made a successful pro debut as he edged a tight points decision 39-38 against Luke Middleton.