Rory Holden's second goal of the season along with an Elijah Adebayo brace - the striker coming off the bench to steer his team to victory - saw the Saddlers deny the visitors a second-half comeback as they stretched their latest unbeaten run to five games.
Clarke, who opted to set-up with a 4-2-3-1 formation for the clash with the Grecians, admitted he is pleased to see several partnerships developing across the squad, before insisting the team remains a 'work in progress'.
The gaffer, who often attempts to downplay results, did agree that the team has been playing some superb football as of late and is keen for them to continue their recent progress over the remainder of the season.
Speaking to the assembled media, Darrell said; "We’re having more of those spells in games where we’re on the front foot, the football is a bit more fluid but that doesn’t happen overnight.
"It’s about relationships on pitches and players who have an understanding over a period of time.
"It’s an ongoing project this football club and I’m sure the fans are bored of me saying that but I’m hoping they can see one or two bits over the second-half of the season, so far, that they can be pleased with.
"I think they can be pleased with the effort and desire over the season and now we have to get better and keep getting that mentality of winning football games.
"That isn’t easy to get to, we’ve had it before and lost it again - lost the fans again over certain bad runs - now we’ve picked them back up again. There’s plenty of work to be done."
With Exeter having a goal ruled out for offside - the assistant initially giving the goal - Clarke admitted he sympathised with Grecians gaffer Matt Taylor but still believes the better team won as Exeter made it four games without a win.
Darrell continued; "I thought it was a good performance but at half-time we could have been out of sight to be honest.
"We were really on the front foot and we know teams like Exeter are going to come back at us, which they did. T\hey scored with their first real opportunity of the game.
"They’ll feel a little bit aggrieved and unfortunate for the set piece that wasn’t. I understand that, but for me I feel that the better team won on the day. I thought my lads put in a good performance so I’m pleased with them."