Villa have not won a match since the opening day of the season, and they were defeated 3-2 by Liverpool at Anfield in their most recent outing.
It has been a worrying start to the campaign, but Sinclair has offered Tim Sherwood some tactical advice to get the best of his team.
The former England international feels that the Claret and Blues have to get the ball into the wide positions and cross for Rudy Gestede more regularly, as the target-man poses such a threat in the air.
"When you have Rudy Gestede in the side, just get the ball wide and get crosses into the box, because he's so dangerous," he said.
Gestede scored both of Villa's goals against Liverpool, backing up the header he netted in midweek to knock Birmingham City out of the Capital One Cup.
Even his performance couldn't cheer Sherwood up, though, and after the match he admitted to the BBC that Villa simply need to 'stay in the division' this season, after a summer of upheaval.
It was a comment which highlighted how poor Villa's start has been, and Sinclair feels that it exposed Sherwood's opinion that there is a lack of quality at Villa Park at the moment.
"Seven games in it's not great [for Sherwood to be making comments like that]," Sinclair added. "Maybe he's a realist, he works with the players day in day out and he thinks that's what they need to achieve. That tells its own story about the quality and depth he has in the squad.
"He will work with them though, and he's a really good young coach. They've bought in so many players because they know they are short."