The Claret and Blues brought in a number of additions over the summer, with the new recruits taking time to settle in and adjust to playing in the Premier League.
So far, Villa's form has been poor, but Sherwood insists that the new signings have already proven their quality in training.
"Some of these guys I’ve only seen them play six or seven times and in a few friendlies,” he said in the Birmingham Mail.
“I’ve got the benefit of seeing them in training also, but it’s completely different. We have got some of the best trainers you have ever seen.
"When you put them onto the pitch they might not be as good at the moment. In the end I’m sure they will come good. But they need to come good quicker rather than later.”
Villa's poor form has been a source of frustration for their supporters, as there are signs that this season could be going in a similar direction to the last one.
Sherwood's men had to battle to stay above the bottom three right until the end of the 2014/15 term, and they have shown little sign of progression.
Villa will be hoping that once the 10 new outfield players settle in they will improve, though, and patience will be key around Villa Park this campaign, as a result.
The Midlands outfit are currently in 18th place in the Premier League, with their next game coming against Stoke City at the weekend.