Watts made his debut in the Queen's Birthday clash with Collingwood on Monday – adding to what Stynes considered a huge occasion for the 18-year-old.
"When I played my first game, no-one knew. It was down at Geelong at Kardinia Park," Stynes told melbournefc.com.au.
"I suppose Jeff White was our biggest recruit in a long time. But with Jack playing now it probably takes a bit of pressure off, because he can now go back and get himself bigger and better and it'll come."
Watts was under intense scrutiny leading up to the match and although he took it in his stride, was confronted with a 66-point loss on the day.
Melbourne trailed by 42 points at quarter time and struggled to have an impact on the contest from there.
"He (Watts) started well and by the end of the game we were getting beaten all over the ground, so it was a hard initiation," Stynes said.
"I think he'll learn a lot from it. He now knows the pace of the game and he knows he's got to keep getting stronger, because he's got a light frame. That'll all come and we've got to remember he's only 18 and still at school.
"We can't put high expectations on him because these things take time to develop. I know the coaching staff will do the right thing by him and they won't push him too hard and they'll take it step by step."
With a crowd of more than 60,000 at the 'G, the match was Melbourne's marquee fixture for the season and Stynes conceded it was a disappointing day.
"You never know what you're going to get but the players do the best they can, they put in the training and they're really competitive," Stynes said.
"They had to travel interstate last week and it probably took its toll. Maybe they were a bit nervous and the young bodies weren't ready for it, plus mentally with the Jack Watts build-up.
"It ripped into everyone. If you care about the Dees, you would have been hurting in that first quarter, but it also reminds us how far we still have to come and that it's going to take time."
Stynes was optimistic the players would bounce back from the club's worst loss of the season.
"We've got a lot of hard work to do and hopefully our kids will be hungry and they'll want to work harder and they still have half a season to go," he said.
"They'll go into the break now and lift their heads and go in together as a group. This is where you build real fire and a group bond where they hurt together and they win together and they've got to dig themselves out of this.
"I've been there when I used to play and you have these lows in life – it's just a part of it, but we'll come back bigger and better."
