The Wigan Athletic forward converted a 20-year free-kick in the dying stages as the Scots won in Skopje on Tuesday night and was revelling in his contribution after earlier letting himself down when Macedonia scored.
"These are the sort of situations I guess you practise for. They don't always come off,” he said.
"I had one at my club recently that didn't quite come off so to do it tonight was pretty special.
"I didn't do particularly well for the Macedonia goal and that was certainly going through my head when I was lining the free-kick up.
"Particularly the first half I thought we were outstanding, so it was brilliant to get the win, it really is."