The Eagles had more scoring shots and more inside 50s than Carlton but kicked an abysmal 7.23 in front of goal to lose by 24 points and leave themselves vulnerable with just one win from four matches this season.
"Straight after the game we were just rueing our missed opportunities," midfielder Bradd Dalziell said on Monday.
"We just didn't put the goals on the scoreboard. It could’ve been a very different score."
Dalziell missed a set shot early in the last quarter and said the team was embarrassed by the opportunities it squandered.
"It probably does come down to technique. You see a lot of the good forwards have their set routine. They do the same thing over and over again," he said.
"We should be nailing them. That's the bottom line. There's no excuses. You can't really blame fatigue because most of your possessions are under some sort of fatigue so it just comes down to your skill errors in the end."
Eagles forward Ashton Hams was also frustrated with his side's execution in attack.
"As forwards we hate missing goals and we love kicking goals, so you'd like to kick most of them," Hams said.
"You might see the boys doing a bit more (goalkicking) this week, but nothing out of the ordinary.
"A lot of the boys after training have five or 10 (shots), and go through their routine. Especially pre-season, that's when we really work on our routine and then do it all year."
Dalziell also felt the side's poor start plagued its kicking throughout Saturday night. West Coast kicked six behinds in the first term before Mark LeCras kicked its first goal at the 16-minute mark.
"We've been trying to get off to good starts in each game, and you halve that and be 3.3 you're pretty happy with that. But being 0.6 you're behind the eight-ball from the start," Dalziell said.
"Coming down to the last quarter that would've been helpful on the board if we had converted early so the pressure was right on us from the start and unfortunately we weren't able to peg our way back."
Hams said his team's 1-3 start to the season was not ideal considering the expectations the players put on themselves at the beginning of the year.
"If you want to make it into that top four it makes it pretty tough," Hams said.
"But if you look at Hawthorn last year, they had a pretty ordinary start as well and everyone was jumping on their back saying they're not as good as everyone said.
"All we can do is look to Port Adelaide this week and hopefully get the four points."
