A three-game unbeaten run and seven points in nine has seen the Clarets climb off the bottom of the Premier League table, with only inferior goal difference currently separating them from 17th place.
And ahead of a second home fixture in the space of three days, which marks Sean Dyche's 100th game in charge, skipper Shackell insists Burnley now have a good platform to build on.
He said: “A few of the lads, including myself, were a bit disappointed in the end that we only managed to get a point on Saturday and I think it shows how far we’ve come.
“There was a lot of positives to take out of the game and at the end of the day a draw against Villa is another point on the board and another game undefeated.
“In the first 10 games we put in a lot of good performances without quite getting the results we wanted. Now we’re finally not only putting in the performances, but also getting the results, which is nice.
“The mentality here has been the same all throughout, even when things were tough after eight, nine, 10 games. We stayed positive and it’s nice to get some rewards and some points on the board.
“And of course points and wins add to the belief and confidence and that’s what the lads are playing with right now.
“Since we got the first win the pressure from the outside has definitely been lifted and it’s nice to be in amongst the pack.
“We have a foundation to kick on from here and it’s nice to be looking where we are now from where we were a few weeks ago.
“Next up is Newcastle and it’s about looking forward and kicking on again.”
Burnley and Newcastle meet tonight for the first time since March 1983 – in a fixture that will marks a centenary of competitive games at the helm for manager Dyche.
Remarkably, his skipper has featured in every minute of every match since the recently-crowned Northwest Manager of the Year took charge at Turf Moor just over two years ago.
And Shackell has revealed why he is already looking forward to putting another 100 games under his belt!
He added: “To put it simply, he’s probably the best manager I’ve worked with. He breeds confidence, he’s a great man-manager and he wants you to play.
“Of course, he likes to find a balance of play, but he’ll never have a go at you for trying to do the right things and pass the ball. He’s great to work with day in, day out.
“I definitely feel I’ve improved under him as we all have really. He sets out very clearly what he expects from everybody in every position and whoever steps into the team, they know exactly what to do.
“I’ve had a good run of games personally. I’ve been fortunate as I haven’t been injured too many times and it’s nice to be picked for quite a few games consecutively.
“I’m delighted and I love working under the gaffer, so hopefully I’m looking forward to another 100 games!”
Since arriving in Burnley himself in the summer of 2012 Shackell has built a rock solid partnership with Michael Duff at the heart of the Clarets defence.
The long-serving Northern Irishman missed the game against Aston Villa with a calf injury at the weekend with Michael Keane stepping in for his first Premier League start alongside the Burnley captain.
And Shackell couldn’t help but be impressed by the England under-21 international’s performance.
He said: “I think Michael has got a great career ahead of him. He’s very, very good and he’s got all the attributes.
“He gets across the ground pretty well, he’s strong in the air and very composed on the ball.
“He plays regularly for the under 21s, so he’s got a lot of potential and I thought he performed well on Saturday and when he’d come on at Stoke as well, which wasn’t an easy one to come into for the last 15 minutes. He did incredibly well.
“I think he’s been hungry for his chance and he’s enjoyed stepping in. If he gets the nod again on Tuesday, I’m sure he’ll be trying to build on the performance he put in on Saturday.”
Supporters are advised to arrive early tonight if they are collecting or purchasing tickets, in order to avoid congestion at the Turf Moor ticket office.