Fernandez headed home his first goal of the season to cancel out Jamie Vardy's strike and earn his team a point.
“The way we stood up is a big positive," Fernandez said.
“Maybe two months ago we would have been down after they scored and we would have conceded more, but we have more confidence now.
“We are training well and the plans we have are working well. We are in a good moment, but we gave to keep going."
Fernandez reckons Carvalhal's influence has been important in his team's upturn in fortunes, as has the belief gained courtesy of some positive results.
"When you change the manager it gives you a lift because all the players want to do well," Fernandez added.
“Then when you start to win some games it becomes easier to work in the week.
“Now we have turned things around a bit and the table looks better.
“You can see everyone is working hard and wants the ball, and we all know what we have to do on the pitch which is really important.
“We also have two new signings coming into the squad who we hope can make us better."