Dominic Calvert-Lewin's penalty for Everton was canceled out by Elijah Adebayo.
Tarkowski said: "Mentality, togetherness and everyone on board. That's not just players, it's staff and fans. We managed to get a point on the board.
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"It's the season's work. We had a great win last week and now have a great opportunity to see where we would have finished without the deduction. We've defended really well this year, apart from the Chelsea game.
"We've been working towards a goal of improving the squad mentality and the togetherness and we have done. We continue building.
"We've got a home game next week against Sheffield United and it's a great opportunity to play in front of our fans and put on a show because they deserve it."