Edwards scored a beautiful solo goal against Brentford last time out that gave caretaker boss James Shan his second win from two games.
And Harper, who is currently on international duty with England Under-19s, has seen the 21-year-old from Dudley do it countless times before.
“Seeing Kyle get his opportunity was absolutely fantastic,” said Harper. “I was really excited for him because I knew that he would take his chance and do well.
“I know he has been waiting for his opportunity so the fact that he got it and took it, I’m just buzzing for him because I know that he will flourish now and won’t look back.
"I’ve known Kyle for a long time. We’ve got closer since being in the building together and training with the first team. We’ve got each other’s backs and we look out for one another.
"The best way to describe Kyle’s goal last Saturday would be a mixture of technique and skill. It was a special goal and Kyle’s a special player.
“He does that type of thing all the time in training and I’ve seen him do it in the academy too so you don’t expect anything less from him.
“Kyle has a big part to play for the remainder of the season. With the attributes he has, he’s always going to be a threat to the opposition.
“He can score goals, take people on and excite the fans.
“I’m pretty sure he will get more opportunities this season and I’m confident he will take them.”
Shan will be in charge of Albion against Birmingham City next Friday, and Edwards could now keep his place in the line-up after impressing at Griffin Park.
First-choice winger Matt Phillips remains a doubt with an ankle tendon problem and will be assessed next week.
If the performance against Blues impresses the board, the caretaker boss could see out the season in charge before a permanent appointment in the summer.
One of the candidates Albion may explore is David Wagner, but they will face competition from Fulham, who are also keen on the former Huddersfield boss.