antohan
gets aroused by tagline boobs
No I don't agree with you @antohan. We have all seen many a mature player lack composure and many a young player have it. It's vital in technique and yes it can come with experience but not always. The same goes with decision making but to a lesser extent as I agree experience is a big factor here. Though Lingard will be 25 this year and he is not a kid like Rashford who is like 5 years his junior.
I wouldn't say composure is technique but a mental attribute greatly aided by technique. The better you are on the ball, controlling it, first touch, etc. the more resourceful you are and the harder it will be to cock things up, but composure is in the head and even with great technique you could completely lack it. I relate it to maturity, not age, and confidence of course (all interrelated but not necessarily correlated).
Take Forlán, he sure had the technique but people still called him a confidence player needing extended runs. Fact is he had landed at Manchester United out of nowhere and wasn't ready to handle it. The moment he went to Villarreal he started finding his footing and next thing you know he was a double European Golden Foot and World Cup Golden Ball (probably the most deserved in a couple of decades).