The Irish were beaten 3-0 by the impressive Turks on Wednesday evening but showed considerable improvement in the second half after conceding two early goals.
Irish head coach Osam wants his side to show what they've learned when the sides meet again tomorrow.
"We knew how good they were going to be and their record over the past two years speaks for itself but we were probably victims of our own naivety to some degree," he said.
"The formation we started with didn't really lend itself to being solid enough against a side of that quality so we had a chat about it at half-time and changed our formation to more of a 4-2-3-1 after starting with a 4-3-3 and it gave us a bit more solidity.
"Turkey killed us on the counterattack in the first half. They were quick and powerful and we couldn't quite match them in the first half. In the second half we were a lot more solid and some of our play was very good.
"We created a lot of opportunities to score in the second half but I spoke the difference with Turkey was that when they got the chances they were clinical and we weren't.
"When I look back on the first half there were positives to take out of it. The players will have learned something I hope and myself and the coaching staff I believe we'll have learned a lot too."
Osam believes that this group of Irish players have plenty of creative qualities and now wants them to improve and start converting those opportunities.
"To create chances at international football you have to be doing something right and that's testament to the players. We'd 11 players in this squad so naturally it will take time for some to adjust," he said.
"We'll analyse want went well and what didn't. Everybody who didn't start on Wednesday will start in the second game. I feel we'll be a bit further along as a group for the second game and hope we can produce a performance to reflect that."
REPUBLIC OF IRELAND U16 SQUAD:
Nathan Tormey (Arsenal)
Cian Lee (Belvedere)
Kevin Healy (Belvedere)
Richie O'Farrell (Belvedere)
Rowan Roache (Blackpool)
Ruari Patton (Belvedere)
Cameron Moore (Bolton Wanderers)
Aaron Connolly (Mervue United)
Ronan Manning (Mervue United)
Jordan Doherty (Sheffield United)
Cian Hughes (St Francis)
Jack Connolly (St Francis)
Aaron Bolger (St Joseph's Boys)
Ryan Burke (St Joseph's Boys)
Joe Redmond (St Joseph's Boys)
Brian Maher (St Kevin's Boys)
Dominic Peppard (St Kevin's Boys)
Luke Nolan (St Patricks Athletic)
Tom Murphy (UCD)
Conor Coventry (West Ham)
FIXTURES
Wednesday, April 6
U16 International Friendly
Republic of Ireland 0-3 Turkey, Whitehall
Friday, April 8
U16 International Friendly
Republic of Ireland v Turkey, Whitehall (12.00pm)