The Baggies return to the top-flight and Mowbray feels that success of this season is well deserved.
He beamed: "This is a proud moment. When you think back to when we lost to Burnley on the opening day, we've come a long way and made a lot of progress.
"Credit to the players, who have won more games and scored more goals than anyone else and rightly ended up as champions.
"There's a great debate in football about whether it's all about winning or all about entertaining. There's got to be a balance and we've got that balance right.
"Hopefully we'll have a good shot at it at the next level. You do need to adjust in the Premier League. There are better players there and you need to have a gameplan, but we'll still go out to try to win matches.
"There will be times when we play against better teams, but there are also times when we can surprise teams and put them on to the back foot."