Ankur and Sharon fear they'll miss out on dream Block house after misunderstanding Scott Cam's design advice

It was the first day on The Block, and host Scott Cam wasted no time advising teams on what not to do.

And what Ankur and Sharon thought was a friendly visit from the host actually had a pointed purpose.

"He got straight to business and basically said my main feature idea for my guest bedroom sucked," Sharon revealed.

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The couple planned to build a rustic wooden wall that would sit behind their bed, and Scotty voiced his concerns over how "rustic" it might look.

"You think the wood shouldn't be rustic?" Sharon asked.

EPISODE 1 RECAP: Five new teams arrive in the country and realise their tree change will be tougher than they thought

"Well I don't think it should be really rustic. Timber, beautiful. I don't know about the rough rustic [look]," Scotty clarified.

Sharon was taking notes… or so we thought. Rather than taking on board Scotty's advice and changing the rustic wood to have a finished timber look, Sharon instead kept the rustic look and changed the feature wall to be half as high.

READ MORE: Why The Block host Scott Cam thinks his dog Frankie will be the star of the 2022 season

After sourcing the most rustic wood ever from a stable and completing their wall, Scotty paid the team another visit.

Sharon proudly displayed the feature wall. "I listened to you," she told Scotty.

"No you didn't. You've done completely the opposite to what I've said," he responded.

"You said don't do the whole thing in wood," Sharon replied, before Scotty clarified that he told her not to use rustic timber.

"Oh nooo…" Sharon said, before trying to convince Scotty that it was still "beautiful".

Scotty was not convinced, and in another blow he told the team their timber beams on the roof weren't good enough, as they were 30mm short from reaching either wall.

READ MORE: Tom and Sarah-Jane's rookie painting error on The Block leaves the crew in hysterics

The bad news was of particular concern because the winner of the challenge room will get to decide which house they want, and multiple teams – including Ankur and Sharon – want House 4.

The revelation they might lose caused Sharon to tear-up.

"All the thoughts going through my head I was like, 'I've done completely the wrong thing and I've lost the challenge just like that'. And it was a lot of effort already to that point.

"I felt disappointed in myself because I wasn't listening properly and I wasn't taking the hint properly.

"I thought I knew better, I suppose, which is so arrogant."

Time will tell if Sharon can make the changes needed to pull off a win and secure House 4.

The Block airs Sunday at 7.00pm and Monday to Wednesday at 7.30pm on Nine. Catch up on all the latest episodes on 9Now.