Neil Harris stated that Millwall need to "be better" with regards to end product, but lauded the "passion and quality" shown in Saturday afternoon's goalless draw with Aston Villa at Villa Park.
The Lions dominated for large parts in B6, but could not find the elusive winning goal, largely thanks to some outstanding goalkeeping from Villa's Sam Johnstone.
The manager stated that his team "deserved" to take all three points from the afternoon.
"I thought the team was outstanding from the first whistle to the last. We unsettled a very good Aston Villa side.
"We quietened down a passionate crowd for large parts and dominated the game. We limited Villa to having very few chances on goal all game and then we've been really creative going forward.
"I'm at the stage now where I can be a little bit more critical towards my players - with a little bit more belief, the performance and chances were there - if we want to take the next step and become a top-half team, then we need to win games like that.
"We had passion, quality, challenges - everything you expect from a Millwall team was there today.
"Against players like Lansbury, Adomah and Snodgrass, players that can be creative, our defensive shape was brilliant and we were excellent on the counter-attack. Unfortunately, we didn't have that end product. That's where we have to be better.
"However, the chances we created were excellent and we deserved to win the game."
Harris also confirmed post-match that Jordan Archer missed the Villa Park clash through illness, whilst Shane Ferguson could miss 5-6 weeks with a knee injury picked up in training.