The former X Factor champ confessed he's loving the competitive aspect of the ITV1 series, but admitted he's finding it more difficult than he expected.
Shayne impressed the judges at the weekend with his first live performance and hopes to boost his marks and make the final.
He said: "Dancing On Ice is tougher than I thought! It's like X Factor in that I love the competitive nature of it, but then I do get butterflies in my stomach before we skate.
"What's best is the bond between the contestants."
And already super buff Shayne revealed he has been losing plenty weight after just two months in training.
He said: "I've been too busy to go to the gym, but I've done a lot of cardio on the ice and have lost loads of weight."
Meanwhile, the Rock Of Ages musical star explained he's had to put his personal life on hold for the show.
Shayne, who recently got engaged to girlfriend Faye, said: "The wedding's on hold because of Dancing On Ice.
"We got engaged and we were really happy, but we're also building a house so between that and the training for the show, our focus is elsewhere."
Browse pictures from backstage at Dancing On Ice below...