Steve Waugh feels Jofra Archer's ability to generate pace "seemingly out of nowhere" will make him tough to face.
Archer took his first wicket in Test cricket when he got rid of Cameron Bancroft with a sharp nip-backer for 13.
Only 24.1 overs were possible on third day of the Lord’s Test before rain stopped play.
Archer, who took the new ball late on Thursday in overcast conditions under the floodlights, had fine figures of one wicket for 18 runs in 13 overs.
"He's done well," said Waugh, one of the determined batsmen of his era.
"It's an ideal situation to debut, to take the new-ball at six o'clock (1700 GMT) under lights, overcast conditions.
"If you want to write your own script, that's when you want to bowl," the 54-year-old added.
"Having said that, he's very impressive. He's got a pretty unusual action, he's very relaxed but generates a lot of pace seemingly out of nowhere.
"So he's a guy that will take a bit of getting used to for batsmen, because he's different and quick through the air.
"We're certainly not underestimating him, but you know Test cricket is about different conditions and different scenarios.
"He's not faced a lot of those yet but so far from England's point of view he's been impressive, from our point of view, we certainly respect him."
Stuart Broad, leading England's attack in the absence of James Anderson, said Archer has all the attributes to become a successful fast bowler.
"He's got all the attributes and he's already been a successful international cricketer, having been involved in a World Cup win," said Broad.
"In our minds, because he's been involved with the World Cup and he's been talked about so much in the last six months, we think he's an experienced, older, knows-it-all cricketer.
"He's still learning his trade a little bit, but he's doing it with great success. There will be times when he blows teams away."
Successive tours to England have seen Australia getting batting collapses but Waugh was pleased by the fact that Australia limited the damage to just three wickets after they started the day on 30-1.
"The key to doing well over here is to not have a disastrous session," said Waugh.
"When you lose a couple of quick wickets there is potential to lose five, six or seven and in the Test match you’re going to struggle to come back from that. So we hung in there really well."
But Broad said England still had time to secure a victory.
"We'd need to bowl Australia out by lunch tomorrow (Saturday)," he explained.
"Our bowling unit's aim is to get the next six wickets by lunch and then ideally bat until an hour, or half-an-hour, before lunch on day five and try to force a result that way."