HAL Robson-Kanu reacted to Albion's sublime 3-1 victory over Arsenal at The Hawthorns on Saturday.
The Wales international netted his second goal of the season just a minute after coming off the bench in the second half, poking home from 12 yards with what was only his second touch of the ball.
His strike came in between two Craig Dawson headers and an Alexis Sanchez equaliser in what was an enthralling Premier League encounter.
Victory came after successive defeats and moved the eighth-placed Baggies on to 43 points from 29 matches.
Speaking post-match, a delighted Robson-Kanu insisted Albion are looking to build some momentum over the final months of the campaign.
Robson-Kanu on his goalscoring introduction off the bench...
"It was obviously nice to make that impact.
"We've been working hard and doing well all season, it's games like that in which it pays off.
"James (McClean) has done well, I thought he was probably going to touch it (before it went in).
"It was a good decision from him and an important goal for us to win the game."
On a big win for the club...
"Yes, of course. I think you're always going to have runs like that in the Premier League, it's such a tough league with so much quality in it.
"But we're back to winning ways and hopefully we can build some momentum and kick on again."
On Dawson's two headers...
"We're a threat, we're a physical team and we've dominated a lot of sides this season.
"That's been a massive strength of ours and obviously set-pieces comes into that too. It was good to see Daws on the end of them."
On making an impact himself...
"It's always frustrating when you're not starting but, the manager will tell you, I've been working my socks off in training.
"Everyone is working to a level where it's positive competition in the group, that's what you need at this level.
"Hopefully we can get some momentum going forward.
"We're certainly not taking our foot off the pedal. The manager has said he wants us to work even harder now we're at that 40-point mark.
"That's what's we've been doing in training and I think it showed in the game.
"It was an important win but we're certainly looking forward to building on it."