The Terriers currently sit 12th in the Championship table, having taken seven points from their opening five matches of the new campaign.
"We've started the season relatively well. Our last game at Barnsley was a little disappointing, for the first 35 minutes we weren't as good as we had been in the previous games and gave ourselves too much to do in the second half," he told PA.
"But in the four other league games I think we can be very pleased with the way we have acquitted ourselves, away at Nottingham Forest and QPR, they're two of the more fancied teams.
"So to get a point at QPR, having put in a very good performance at Forest, is something we can be pleased with and going to Millwall is always difficult, but to get a win there and a clean sheet is very pleasing for everyone involved."
Clarke is in his fifth season with the club.